Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb5d61fca2e5121…

MALICIOUS

PDF

89.1 KB Created: 2021-09-07 10:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 26c8f0eaf13c558851218d5b212068e9 SHA-1: a480b06c50e617080cff2df6cf072564bb88c0b6 SHA-256: 2eb5d61fca2e5121bd8a0e6fac5c90b71eef59a5b27a686c7b1cb4cd5669573c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link

The PDF document contains numerous links to potentially compromised websites and a specific link farm pattern, indicating an attempt to host malicious content or redirect users. The 'SE_CALLBACK_LURE' heuristic strongly suggests a callback phishing or tech-support scam, where the user is prompted to call a phone number. While no scripts were extracted, the overall structure and heuristics point to a phishing attempt leveraging external links and social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 https://dotcomtravelegypt.com/userfiles/files/56698403336.pdf In PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/ba858732f7b6a57efc3fb3fe1ad99b9a/10530428003.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/ed278bee7d726d31cbd4a0606322b86a/jezik.pdfIn PDF document text
    • http://myxroad.com/upload/userfiles/file///kilizegaxepujefo.pdfIn PDF document text
    • https://flyfinz.com/userfiles/files/fiwexunexedemozomanexatip.pdfIn PDF document text
    • http://parejalecaros.com/adjunto/upload/fck/files/82966888836.pdfIn PDF document text
    • http://prasongp.com/file_media/file_image/file/rasotomevejisakijuratuku.pdfIn PDF document text
    • http://gilendor.cz/userfiles/file/13470500393.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/ab048d8f238f315a728ca401ef7eab97/diserewobawedokunudafov.pdfIn PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/rimup.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160717776a7c70---80943840121.pdfIn PDF document text
    • https://www.mnogotrop.com/ckfinder/userfiles/files/nusebojupo.pdfIn PDF document text
    • http://cochu.net/resimler/files/fevikipagafamoputi.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/demetoluduxudu.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4b867079a---tijirugovoneluw.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7c6bed8b5---23785257344.pdfIn PDF document text
    • http://stallingreunion.com/clients/a/a3/a37dbb3dca22f8cb40f44de83fe48269/File/12561556176.pdfIn PDF document text
    • http://acutecardio.ru/sadm_files/xewenetudikelozopoterep.pdfIn PDF document text
    • http://www.bufolari.com/public/immagini/file/68426494259.pdfIn PDF document text
    • https://botorka.ro/userfiles/file/71825401925.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607975194d4b3---gowuxinagafagitez.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/zafemaludeto.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/3rm1p926qv62dtachsgj0bdqek/11283300656.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/dowabokekitajilixugus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=hanabishi+oven+toaster+manualPDF 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_off0000f5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E1 18688 bytes
SHA-256: 9eb6044a541956e7d5ab315c7ea18ff877fb5ce1dd681845ac18da1bb0b801cf
font_01_sfnt_off0001268e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1268E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EA5 10668 bytes
SHA-256: b3eebb606ec6e28eaac34e7c859efbc39556dc2d037e37df4fef2ec57ba7ded6