Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbec8c53494b1217…

MALICIOUS

PDF

81.7 KB Created: 2021-05-07 04:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bbb2c78ab3be0cee7259a4cb89807169 SHA-1: 1bfe34b654c3c47ce293d5c0056ee676e9b27c32 SHA-256: fbec8c53494b12172e7a9101f09048d1df4a6fc61d178c8de52e704b00eca4e1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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 https://lozipotod.ru/strik?utm_term=husqvarna+435e+ii+review PDF link annotation
    • http://fukipinegu.22web.org/memoxo.pdfIn PDF document text
    • http://pisodanijuke.iblogger.org/nopemoki.pdfIn PDF document text
    • http://alfa-quest.ru/dalasemakugapugxzm8y.pdfIn PDF document text
    • http://zagafen.iblogger.org/60497170585.pdfIn PDF document text
    • https://cdn.sqhk.co/wozepefiga/gnZhfgg/xoluxobopufe.pdfIn PDF document text
    • https://cdn.sqhk.co/dukoredod/Qgihfjd/carrom_superstar_mod_apk.pdfIn PDF document text
    • http://byt-upak.ru/bixazadazutoxuxelixunatuo0x4c.pdfIn PDF document text
    • http://hhizmet.com/1748519017kyvk6.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/0c8e3d2b-aa65-44f0-87b9-151631750e49/73550797550.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/38576323034.pdfIn PDF document text
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_97156047295a47a58b2c559f186e2c17.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/howsweeteats_sheet_pan_gnocchi.pdfIn PDF document text
    • http://nuzoniwetavo.rf.gd/nunamiwaxiguwome.pdfIn PDF document text
    • https://1a447ccf-a6a5-490c-ad31-399ae8169532.filesusr.com/ugd/cf5184_7296f9f437a24594a60b64d59edf1888.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a07f8fa8-1da3-4750-b193-3712f4576b2d/what_do_you_write_in_a_personal_development_plan.pdfIn PDF document text
    • https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_73bfa0b8865a4fe0a994b58a8b607608.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/1245070569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2a1f4ed-1c2a-42f0-aed9-6bfcf37fdeaf/nupibobujakapede.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f60596d4-0c2f-4db9-9397-416ebee21969/96750227909.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE60 5260 bytes
SHA-256: 969e4a862f459447c480a1a81fcf50939d97e531e59eac406a0a732666519852
font_01_sfnt_off00011077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11077 11736 bytes
SHA-256: 4ebc3302d772ec46944cfb3e68bc560c7255f3d89e8eacc381f3876f1f3fcd5d

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