Malicious PDF — malware analysis report

Static analysis result for SHA-256 e969d4e518d59ea7…

MALICIOUS

PDF

79.8 KB Created: 2021-03-20 18:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f865ee275ef7513a3b392f5504fefe6f SHA-1: af46c70854a96d93a94946e6e51cf35eef72f2d8 SHA-256: e969d4e518d59ea7bbe2352124f08492a712a6638cc7d1b9118d799f92780542
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 0.9997

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://fokemale.ru/strik?utm_term=how+to+start+career+in+cloud PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366041/normal_6010f8d90e633.pdfIn PDF document text
    • http://1freedom.space/7500361108bypm4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453743/normal_6054082b7bf16.pdfIn PDF document text
    • http://homeolimp.com/jinaxaxefi83j6i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459062/normal_605493cf88d39.pdfIn PDF document text
    • http://shothard.site/56198671133wblzt.pdfIn PDF document text
    • http://13millions.store/shatter_me_series_ratingg5b2p.pdfIn PDF document text
    • http://ita-yog.space/from_gene_to_protein_transcription_ami7k7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413851/normal_5fe5d24d4906a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476601/normal_5ffa2c3b1b517.pdfIn PDF document text
    • http://magicwoolshop.com/dulanovijanopovivogetugk5yov.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/29bfd6b5-3cc3-40d3-9822-b1fc3bdd34e5/fisher__paykel_spare_parts_sydney.pdfIn PDF document text
    • https://235a1a37-2bc9-4d3b-8f1d-d3952ad9fba8.filesusr.com/ugd/3111f7_9ebd08ae5cff454483411321fc9570c0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff9fa2bc-9070-4644-a35c-21dad2d88629/what_is_maternal_nutrition_in_pregnancy.pdfIn PDF document text
    • https://788ae96d-7a4f-4726-91a9-07bb742fb3e7.filesusr.com/ugd/97aff7_58d1b3c38a384a4694c4a66db893780e.pdf?index=trueIn PDF document text
    • https://297de083-771a-4730-a3b8-a2afe8c7d209.filesusr.com/ugd/47424f_1ef585d230834dc28e9a42efb950bd87.pdf?index=trueIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_a0ad6f5b33444dfd96914863105996e4.pdf?index=trueIn PDF document text
    • https://8a5a474a-a671-4857-921d-d1df0ee72544.filesusr.com/ugd/523716_cc07c0ffc267483cbf674e65734c9e3e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/334a074c-f648-4b50-8b3e-0a31fd2b2cf0/small_boat_motor_repair_shops_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc2df5ef-a852-4a17-bf3b-28734fbcd4b0/how_long_to_notify_dmv_of_address_change.pdfIn PDF document text
    • https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_8608ae34767845e59776986bfb678a63.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFB 4984 bytes
SHA-256: 70a6ef73e858e3dd2af07fa0e08d1e2e961dcead481f449fa1df931a871ca632
font_01_sfnt_off00010d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D06 10844 bytes
SHA-256: 110debc67760766e87c8ab39cf75e7e4d87861e0967e9ef4bf496f07a05de04d

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