Malicious PDF — malware analysis report

Static analysis result for SHA-256 499152a7341e006c…

MALICIOUS

PDF

67.4 KB Created: 2021-03-25 13:14:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: a66d0c9187fc74010f853d2e8e800560 SHA-1: 53d46d42cd014a4db5e4254785f9ef9d33f81ee5 SHA-256: 499152a7341e006c3695ad61e9bde1094feb548feb7b6cd1f065f8d1044aa822
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external links, many hosted on disposable domains, suggesting an attempt to direct users to potentially malicious websites. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://dugedepap.ru/strik?utm_term=tt+configured+on+limit+closed PDF link annotation
    • https://cdn.sqhk.co/zoluxoni/oWgelfK/the_warriors_game_xbox_1.pdfIn PDF document text
    • https://nojinogexosop.weebly.com/uploads/1/3/4/6/134695112/fobefuxovev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482215/normal_605c007882c36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468553/normal_5fe66c938ba80.pdfIn PDF document text
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/dusejevepasuwelas.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/hglgdhh/gogo_live_mod_2020_apk_pure.pdfIn PDF document text
    • http://podipotekoi.ru/mitugavadejk8tk.pdfIn PDF document text
    • http://kushtanash.ru/nozafijiatay3.pdfIn PDF document text
    • https://cdn.sqhk.co/talokelom/ghkJZwf/jopijavapatuzezabawer.pdfIn PDF document text
    • http://geosen.net/cheap_plus_size_short_formal_dressesx94x5.pdfIn PDF document text
    • http://www19216801.site/sodegegusejo3urs8.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/XFw7aij/dragon_ball_z_gohan_superhero.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/ha0nNgs/nerodezenikijok.pdfIn PDF document text
    • https://cdn.sqhk.co/fixijolexap/1ghVyjb/arrow_pointing_right_clipart.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/qBjbicP/74088685378.pdfIn PDF document text
    • https://cdn.sqhk.co/rojogonezejo/ghwOhbN/wigek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cceeb87-abbc-43b1-bd8f-fc21eecf4c1b/15051143813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac975c4-c900-4944-85fc-8339533ab7b0/perajisoj.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEC 5080 bytes
SHA-256: 75c576f8d625077faea1f96e16fafbb26a1ad3c6a4c90beafa4644f433791bac
font_01_sfnt_off0000ed27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED27 10800 bytes
SHA-256: 0c192b6ff8595d541c875ade478ee23ff1dd20e93b78c1f22f242951237743ae

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