Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4331618608ebd5…

MALICIOUS

PDF

71.5 KB Created: 2020-12-23 00:47:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f9c7f1dc2ed092cc4771ce03603258d8 SHA-1: 7c9bfef411ffa0115fb04a91e78457ac4028475d SHA-256: 2d4331618608ebd5e3b2aa5f6103300e3b97c4179428c5177b4128cf34900101
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://trafficel.ru/aws?utm_term=eagoler+chokh+full+movie++300mb PDF link annotation
    • https://jupavovol.weebly.com/uploads/1/3/4/3/134314217/5913494.pdfIn PDF document text
    • https://rutesobob.weebly.com/uploads/1/3/1/8/131856950/1523527.pdfIn PDF document text
    • https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/5d912d4e42c.pdfIn PDF document text
    • https://lifulufo.weebly.com/uploads/1/3/1/3/131379971/3626086.pdfIn PDF document text
    • https://mefevujeloz.weebly.com/uploads/1/3/4/3/134317202/jokek_zukagi_fofidevip_latejapuwefixux.pdfIn PDF document text
    • https://juziwujaxizeze.weebly.com/uploads/1/3/4/6/134685910/wizunike.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/xuvebupavufatokiwem.pdfIn PDF document text
    • https://wokumedepawal.weebly.com/uploads/1/3/4/6/134607606/fugoregadiz.pdfIn PDF document text
    • https://mikudone.weebly.com/uploads/1/3/4/3/134370159/gimafakiromu-dinol-pilob-xirovijitudo.pdfIn PDF document text
    • https://bidovakufizal.weebly.com/uploads/1/3/4/5/134586087/3ac4bc16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc7a9ace9133927d9103a50/t/5fcddb2d9aa2de0c64b5b97c/1607326509965/tap_tap_tap_song_tik_tok_clean.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/what_is_mass_defect_answers._com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e9f1baf-2e4a-4955-9279-751febfc3775/fojadamalofaxogakaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5396494a-f41d-4550-8d85-1d370e50c3e4/nijafopovimofi.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn 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_off0000c24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC24E 5644 bytes
SHA-256: fa3214651bfec9add74beeb8709de1b6bfc801944c17be137fb2223d1796188a
font_01_sfnt_off0000d565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD565 6488 bytes
SHA-256: b3589f5036e535ed48871f1e6845febab7a9ec700586a2a36530bf7b24f1385f
font_02_sfnt_off0000eab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB5 11804 bytes
SHA-256: bf86c3e136df2b06a1a5b06823f5278606d5632c8ce4bfb7ff9564a035cd5343

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