Malicious PDF — malware analysis report

Static analysis result for SHA-256 c010762386086485…

MALICIOUS

PDF

65.2 KB Created: 2021-01-03 23:02:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 5310d0ce97eb3cd8fc7790bc453398cd SHA-1: e88d053006c67aa69846acb747e8d32de5b0fdd2 SHA-256: c010762386086485fdfeeec510d230531c86db7a37f4c4f2c466e9e733ee4df3
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The presence of a URL with 'utm_term=clermont+county+jail+sheriff+warrants' indicates a lure to attract users searching for specific information. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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://traffset.ru/123?utm_term=clermont+county+jail+sheriff+warrants PDF link annotation
    • https://sefariduzaki.weebly.com/uploads/1/3/4/6/134665623/4426648.pdfIn PDF document text
    • https://xitemexum.weebly.com/uploads/1/3/4/3/134311382/9428103.pdfIn PDF document text
    • https://soberonapi.weebly.com/uploads/1/3/2/6/132681790/5427474.pdfIn PDF document text
    • https://motovonesavot.weebly.com/uploads/1/3/4/6/134690882/zogumotuzuja_moxododozo_piparo.pdfIn PDF document text
    • https://jasujoru.weebly.com/uploads/1/3/1/4/131483343/d2b38ba.pdfIn PDF document text
    • https://zawevujavesid.weebly.com/uploads/1/3/2/8/132814930/zufugigedivojad.pdfIn PDF document text
    • https://senorori.weebly.com/uploads/1/3/4/6/134641151/245929.pdfIn PDF document text
    • https://zewadozodatigi.weebly.com/uploads/1/3/4/3/134337643/fopisazosed.pdfIn PDF document text
    • https://volufijipezuji.weebly.com/uploads/1/3/4/7/134703795/lamurapusakuminav.pdfIn PDF document text
    • https://roxejane.weebly.com/uploads/1/3/4/4/134486752/pategelo_sawejopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/janodojivi/hill_district_pittsburgh_crime_rate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda23f5a-a103-4360-b6dc-0acc3c725c60/64463757215.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_off0000c2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C7 5296 bytes
SHA-256: b074f06836af46110bb0cfaa274c0494c7e2df42220754d34641167f32a5bf25
font_01_sfnt_off0000d4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B4 10492 bytes
SHA-256: baabce895f6ed49d4ca06c7db023b5faa41fb13fda68cc88f4f5643a0e415542

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