Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7988f7bed9d1335…

MALICIOUS

PDF

226.9 KB Created: 2021-07-31 14:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: f6380a76e2d6c5e9a9a4b8421cc3024f SHA-1: 769b44cf13678f4f40174f9480d8b8f1be476850 SHA-256: b7988f7bed9d13357f1e95508b48ba507f2bef1a94d8756dc81c5833fcba7092
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing attack, employing urgency and fake invoice lures to entice users to click on malicious links. The presence of multiple external URIs, including those pointing to compromised CMS uploads and SEO redirectors, strongly suggests an attempt to lead the user to a malicious website. The ClamAV detection as 'Pdf.Phishing.Trojan' further corroborates the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7167

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crysiq.ru/uplcv?utm_term=mudra+loan+application+form+pdf+sbi PDF link annotation
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/691bc620be48714ebb437a795500e605/juxaponajukipegitiz.pdfIn PDF document text
    • http://raiders71.com/clients/4/41/4134020f2f298c111575624a380fabfc/File/xivasivemuvuwebewaxa.pdfIn PDF document text
    • http://sportingclubalbinia.eu/userfiles/files/guvesuji.pdfIn PDF document text
    • https://infotechloyalty.com/bot/ckfinder/uf/files/gibitopo.pdfIn PDF document text
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/lmaiol8ljkkfd3n0s0t3kndeg2/19075652179.pdfIn PDF document text
    • http://exito-opakowania.pl/userfiles/file/vudawok.pdfIn PDF document text
    • http://pillshop.ru/uimg/files/47893836009.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/58071b9c760c81213eaaf34a3d54763f/36937330585.pdfIn PDF document text
    • http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/24031354911.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/72650703687.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608204a0069d6---pakukupotesafogix.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fbc822b70b6---62755312073.pdfIn PDF document text
    • http://datong-travel.tw/upload/ckeditor/files/20210707130816.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb5df61bdd---bijojelufo.pdfIn PDF document text
    • http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/susefawadodev.pdfIn PDF document text
    • http://psystems.gr/Administrator/uploads/userpics/OutPostImages/files/21234177428.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/7b9a57388cf556443d708978efdf9b31/libelana.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607beb8512cf8---50967980457.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/feremepadogixotop.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fedaa25ca6---78818687672.pdfIn PDF document text
    • http://vrtaspol.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/kaburorasofuda.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/b2db08095d37c9b6be618bb25050f768/mesisalesu.pdfIn PDF document text
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/81e15b5319cd4be5d94930f65f381f92/12716031686.pdfIn PDF document text
    • https://okazionche.com/files/90480988548.pdfIn PDF document text
    • http://benetworkingpro.com/ckfinder/userfiles/files/kajewurige.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000303e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303E2 10884 bytes
SHA-256: 58cc4002c19276b91f98c4064407fab7b3de6c2a0d508a3938cc41230abc393f
font_01_sfnt_off00031cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CC3 17868 bytes
SHA-256: e9b67dcf0ddf49406b3498f9ff6ab8b44e706b3ec199b13c407caf0c237f5c1b
font_02_sfnt_off00034c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34C29 16484 bytes
SHA-256: e100eb321310ec3ec20d8662b165cad2a9cbc6d5fa12b6937d3c6196a0b5bef1
font_03_sfnt_off00036313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36313 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.