Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d197ae954d4d4fb…

MALICIOUS

PDF

76.7 KB Created: 2020-12-28 08:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1f0e18941c339ddd23225828c677e0b3 SHA-1: b7ecd06ba908d25aa9a8fe0083c70a36c68edd13 SHA-256: 9d197ae954d4d4fbb55c2a0ee8c015e004c7694d41105c8cfe4db082c964044d
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that redirect to a website offering a 'free download' for 'Toca life town', a tactic commonly used in phishing or malware distribution campaigns. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for such lures. Although no scripts were explicitly extracted, the presence of external URIs and the ML classification strongly suggest malicious intent.

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://trafftec.ru/wb?keyword=toca%20life%20town%20free%20download%20ios PDF link annotation
    • https://dizakevusarebiz.weebly.com/uploads/1/3/4/5/134581037/038f7c5b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f870fbad8f3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464082/normal_5fddb79c7c1a8.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/zkizvgj/jeux_de_3d_moto_simulator_2.pdfIn PDF document text
    • https://lozugukavokukes.weebly.com/uploads/1/3/4/3/134357100/1513272.pdfIn PDF document text
    • https://zibaxewax.weebly.com/uploads/1/3/4/6/134699960/05060f1.pdfIn PDF document text
    • https://cdn.sqhk.co/parapirer/ePhesjj/kavepero.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f87e3057d947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446649/normal_5fad2b830b022.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/wewiro/72774102853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/135d718c-0ebc-4673-9b2d-63df2cef93d5/knight_chess_piece_tattoo.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/zenetavuw.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_off0000e1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A7 3616 bytes
SHA-256: 6b76d52c87f86ad5e7b2000e0e07d5f92205725ec4fc1a92f11e683f433787ee
font_01_sfnt_off0000ee7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7B 5056 bytes
SHA-256: 34757ca87e597073782442f91c09ee3380db7e40f89891c0c614c470829dd656
font_02_sfnt_off0000ffcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCF 11080 bytes
SHA-256: 3698165f4c716efff1c4639ae16d811321a13cb48b20e8aee33141165af10818

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