Malicious PDF — malware analysis report

Static analysis result for SHA-256 14eba54248951c7e…

MALICIOUS

PDF

87.9 KB Created: 2021-07-07 08:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b6966c00151dd27dd5a6a3d4d6bffdbb SHA-1: 90e7ce47674559593e8a909d9da4b3e3139ec4f4 SHA-256: 14eba54248951c7eee5eba1a73fccf9e3a59cb1a287d0a5697e563996d116551
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms, suggesting a link farm or phishing lure. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification strongly indicate malicious intent. The heuristic 'SE_CALLBACK_LURE' further suggests a phishing or tech-support scam context, although the document body itself is unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f3a5040cc---90159303167.pdf In PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/i6rloqi65jh7k45pabvelgeqk4/86421397273.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/9ec60e5bed3ffd050eeb8fac6e249c87/rabimomekovivareforab.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/5020490658.pdfIn PDF document text
    • https://mosconi.net/userfiles/file/fumuzidirajodixov.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/ramataxexokol.pdfIn PDF document text
    • http://koyomisushi.com/uploads/files/vezised.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16099f77e4fe72---57825373518.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/ed4b536e79e6aa1a09386f3fcee308b1/53068173244.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bade92ac137---nedegoferadafulagego.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c39eb542bae---8990527192.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/eb6547ee79ddbe37327254e663f648de/28043089186.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/c99500b88580bfa628079096addafc72/lezovajadutuva.pdfIn PDF document text
    • http://supermarketdv.ru/files/file/32785878565.pdfIn PDF document text
    • http://atol-res.pl/uploads/file/refufuvaxudaku.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160812dd69bb0c---masuzomame.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f58d9c6a60---zibelibodabidoxodaxe.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/lafanitilapotepexezelavod.pdfIn PDF document text
    • http://keletunderground.hu/images/uploaded_pics/file/xowara.pdfIn PDF document text
    • https://www.leadercaravans.com.au/application/third_party/ckfinder/userfiles/files/11435008919.pdfIn PDF document text
    • http://veiligheidsslot.nl/ckfinder/userfiles/files/57605193008.pdfIn PDF document text
    • http://rolmech-strzelno.pl/Upload/file/25567924121.pdfIn PDF document text
    • http://dailyliving.nl/ckfinder/userfiles/files/27532988050.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/28751280698.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=grade+5+problem+solving+questions+and+answersPDF 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_off0000f3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCF 16924 bytes
SHA-256: a8d08e41ca04908c0b4d346b5d16423b1ae95caee95675f4492a8c0a02fb6a44
font_02_sfnt_off000137ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137AB 11448 bytes
SHA-256: 9170389fbe31467fcb676d839f7957e3662f56dd6890776d37bf0c4164d9e3db