Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69d2487cf98fe15…

MALICIOUS

PDF

99.9 KB Created: 2021-09-04 03:36:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ff7f688488b3f9a3444e0f6ead392d61 SHA-1: b2b37c137cbeccca79400e776dbd4cc1f4df21ed SHA-256: d69d2487cf98fe15ba74914f954b45e13c194717ec073a426f4fbcb33e2aa1d5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm to distribute malicious content. The presence of external URIs and link farms strongly suggests an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 http://dharmapremipariwar.org/userfiles/file/pamup.pdf In PDF document text
    • http://morgancountyoh.com/userimages/6998410657.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6dabeda108---64266862287.pdfIn PDF document text
    • http://capri.lt/userfiles/files/jesalumegufetogokalukowez.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609629af889fa---fepesedumufef.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/7fbd522463942f0f89dce00dbf0f19e4/54483121870.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160a01bd2eb726---taxafigopepukukamemubi.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084e67a00088---68416790587.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac93a2b7362---karugevusiralur.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/d79267ab6b0ea34fae60a5c8b5ce9934/66236712193.pdfIn PDF document text
    • http://dansecyr.ca/pdf/file/toworizob.pdfIn PDF document text
    • http://dollreunion2020.com/clients/4/43/4392dc7a9e9236654a628da0af121bbb/File/tenivazadepawovom.pdfIn PDF document text
    • http://poiskvod.ru/images/file/misonafonavavasafuf.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1612f63d10a51b---55250880525.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/44jf9peqb5irhnpo0a2paq96o3/gobisedufa.pdfIn PDF document text
    • http://tiwtactic.com/userfiles/files/rilaro.pdfIn PDF document text
    • http://raczcsalad.hu/files/dofamurepidulupiwezukig.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/17513578648.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160965748d2922---tosikazokow.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/togufisimukuzib.pdfIn PDF document text
    • https://agermag.ro/mm/file/90808931132.pdfIn PDF document text
    • http://pvvc.cz/files/70140520625.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b791b4439---85458098282.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa20141c293---99170685277.pdfIn PDF document text
    • http://ohmamakitchen.com/uploads/files/gezelusopolemivivikapuwup.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/01b372d04a13bc93e17fc1c3f9cc5bd8/24610059655.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762f1f11326---92551061934.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=conjonction+de+subordination+anglais+pdfPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11829 21248 bytes
SHA-256: 6435ae26613762f2902e819a1245c9e2e3f6c2a28ce91cc0e65ab345efced59a
font_01_sfnt_off00014db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DB8 11196 bytes
SHA-256: 7626068887995053969b8884476f51c4bf21f7538a0512a5bed39e30a57152d1
font_02_sfnt_off000167a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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