Malicious PDF — malware analysis report

Static analysis result for SHA-256 6016b8217788af12…

MALICIOUS

PDF

79.6 KB Created: 2020-12-31 04:45:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8b34971547195fb9c63e13469b03a667 SHA-1: bc88dfc9231850ba2d6dd75dcc74c71a352396fb SHA-256: 6016b8217788af12731f914f115531fad5d1a4c273e0b6de468e03523044679f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 6

  • 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
  • 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://trafftec.ru/strik?utm_term=super+truck+racing+ps3 PDF link annotation
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/lozasuwexekizis-wewozugegi-doriruruze-fagowawe.pdfIn PDF document text
    • https://jigaxokere.weebly.com/uploads/1/3/4/6/134622899/7169506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_5fdc35a1d0f99.pdfIn PDF document text
    • https://gewivobom.weebly.com/uploads/1/3/4/6/134643535/vupisuxej_kokofunotakasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390366/normal_5f9f33f066c6f.pdfIn PDF document text
    • https://suludizivot.weebly.com/uploads/1/3/1/3/131383823/f6e855.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484355/normal_5fecb4e640d32.pdfIn PDF document text
    • https://muxoramosuzuveg.weebly.com/uploads/1/3/4/2/134266249/fareg.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/2cc4de7ee6.pdfIn PDF document text
    • https://lusovajilabijix.weebly.com/uploads/1/3/5/3/135351537/170421.pdfIn PDF document text
    • https://xuwudivalef.weebly.com/uploads/1/3/4/8/134889087/7665718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385435/normal_5f915f079babb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/7_day_self_guided_tour_of_ireland.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba0ea03e-b497-4df5-84b5-5eb9fcec440e/70753922291.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a2b0cfc-aba3-41c0-933d-9e419e92c89b/jaxuxakipajevibetunar.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/subudibasigedunagibamu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF3 5172 bytes
SHA-256: a50f10fb99a1da2bd3da5438c81c61b6e9cafdf1fb9d6b7680c5ba6538866987
font_01_sfnt_off0000fd9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9C 10932 bytes
SHA-256: 8b725264b021f917ed91c5a1e18511883b209743fba6f720daeab6efa7dceb3e
font_02_sfnt_off000122e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122E4 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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