Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f2354f90f1d34d…

MALICIOUS

PDF

460.2 KB Created: 2021-07-07 03:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 5f266032008c2c6d5541ce59f551f127 SHA-1: 15931dd884f26ff80f56c422992cb2a4a7a97b20 SHA-256: 69f2354f90f1d34d2ccbc7a61839eb64444dcfdd86595a312ac9f9c37011e57e
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised WordPress sites, suggesting an attempt to distribute malicious files. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' indicates a lure for free downloads, a common phishing tactic. Although no scripts were explicitly extracted, the presence of embedded URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest malicious intent, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6376

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/c83a2215a78196fcd976992f24293254/21865884967.pdf In PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608994bc4ba73---87365509783.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/62o54m9qa30aalun7i00ovuil5/8638524487.pdfIn PDF document text
    • https://tedvandergulik.nl/userimages/file/17680160817.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/16071a0b8abaa1---nobolujixidonotanexomij.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/s7e8v0o2c0s2uq8unhpq5fu2e3/20688997398.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/938755ff9513e64926650f504d481ceb/defanavatifugobedubugiba.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/91800336954.pdfIn PDF document text
    • http://nwatchonline.net/userfiles/file/82032495035.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba1aa56b76---92610830932.pdfIn PDF document text
    • http://liyangah.com/Upload/file/14279696758.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/5a9270a2c870d4a123bbe38a8db65d42/dewolubotorofared.pdfIn PDF document text
    • https://publicbridge.pl/userfiles/file/zatoduzedizinewedu.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077062b128a8---tetuxutij.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/45b9fe76551049ffdf96f113caaa97ee/laxekanokoladerara.pdfIn PDF document text
    • http://grgct.com/ckfinder/userfiles/files/vowezoxo.pdfIn PDF document text
    • http://pospatrans.cz/UserFiles/File/64460095354.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021051503313895.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/594e0be5dac6e7ffe138541792ca991b/kivifuwik.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/97786edbe823171f649b24d1543ac7ec/tazopuxenimipadanubedowuz.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/f908d07606c7e192b62d7cadf1526ec3/98327512398.pdfIn PDF document text
    • https://optimustelecoms.com/ckfinder/userfiles/files/vusuvuxifakedoleko.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/707e445e7c68eabe7d4c7466da515f4a/78495777097.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=2pac+smile+mp3PDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006916c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6916C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0006a97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A97C 14340 bytes
SHA-256: 77ae8de51e68705c63378304c631cc55d3b82e96d7c6ebad52793ca9c2980677
font_02_sfnt_off0006d712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D712 10308 bytes
SHA-256: c9734aabbfccfc5f24e6d13925d2796b79fc9a4350f0d2d86743cf1e4639f0d2
font_03_sfnt_off0006ee60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE60 17640 bytes
SHA-256: 57ba3e04afcbfff3e55894e41d3f18d913bb67c9b2af7678f9169c931b922a02

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