Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12fa1cb8b438190…

MALICIOUS

PDF

72.4 KB Created: 2021-03-20 17:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 213024ee9b283dab87326d2f9d40a493 SHA-1: 5a92c63b17d127ca01d631ee66990c17bee5d306 SHA-256: e12fa1cb8b4381903da2591507fbe69902f88676e41f4bd32af92556df475024
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 0.9996

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/wix?keyword=backyard+football+2002+download+reddit PDF link annotation
    • https://cdn.sqhk.co/petawelesup/i8PJ64L/9437446320.pdfIn PDF document text
    • http://testertumentum.space/73607124210s6bzm.pdfIn PDF document text
    • https://cdn.sqhk.co/dipewoduge/tWhesia/18750660159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449775/normal_600d202511ee9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_600da7880eeec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412593/normal_5feb26bad8d62.pdfIn PDF document text
    • http://devivitonewe.sportsontheweb.net/tecnologia_da_informao.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/jcix6vF/weeds_cast_season_5_episode_8.pdfIn PDF document text
    • http://ostanni.fun/51691632117xgv36.pdfIn PDF document text
    • http://goodshopsales.xyz/how_to_use_adobe_acrobat_proqcirp.pdfIn PDF document text
    • https://vewudati.weebly.com/uploads/1/3/0/8/130873955/7004617.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411491/normal_5ffe195b68385.pdfIn PDF document text
    • http://vegofejolafud.mygamesonline.org/setojavofubudugupe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499334/normal_602352f288c11.pdfIn PDF document text
    • https://kufifelukabi.weebly.com/uploads/1/3/5/2/135297374/6330841.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480749/normal_603afdf9c6fa7.pdfIn PDF document text
    • http://faxusigeroles.sportsontheweb.net/admission_form_format_download.pdfIn PDF document text
    • http://peuer.xyz/64538897795hv7n9.pdfIn PDF document text
    • http://pikegupima.medianewsonline.com/jomovosapomesokuke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417206/normal_5ff9c41a58604.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bobixupeto.myartsonline.com/momuzurekawagodaw.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF20 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off0000d963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD963 5560 bytes
SHA-256: 241c731df6cac67f7ce47591928d4e630f72e5a74a37f6dbcc0fee7f151604bc
font_02_sfnt_off0000ec7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7D 11340 bytes
SHA-256: b45d624a587399268a6d64c1be714201a3d0263fe39f8eec227cb34fb33b5a54

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