Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d63743effb70361…

MALICIOUS

PDF

65.5 KB Created: 2020-11-16 23:59:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 60371115761794e4b761e70f154c16b6 SHA-1: 2e70c70a3b4558191bf71e778f5a556c2aa33915 SHA-256: 0d63743effb703613a7201d138b7539b0787f3e2686633e5d1115824a79f6143
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=alpine+double+din+carplay PDF link annotation
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/7569923.pdfIn PDF document text
    • https://mupififidimob.weebly.com/uploads/1/3/4/2/134234858/zixuteboni.pdfIn PDF document text
    • https://jaregufadux.weebly.com/uploads/1/3/4/0/134016720/julonas_wutalawo_nidifuvutixil_jiwalilakuf.pdfIn PDF document text
    • https://winapusumebut.weebly.com/uploads/1/3/4/6/134695108/katotijabajuroki.pdfIn PDF document text
    • https://sukowuxipimo.weebly.com/uploads/1/3/4/3/134318810/xufoxudogolir.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/0c7c961960e5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/01fb8877-4456-462c-a021-72f23c3bdacf/luxopewaxukibiluduxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a47d16a3-a6f0-4662-8d62-cd732d410104/bugeperazetelopikudalofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c817acf-dd26-4c7a-bfae-cf6f46663db1/rinavipaku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/497ebdd6-171b-4720-acb0-e15ffa94297d/tifowemewinubezapix.pdfIn PDF document text
    • https://s3.amazonaws.com/sodoxi/wild_rose_elementary_wild_rose_wi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ad9510-802b-4328-84f4-7ea735e974ea/pevujujebilidogivogo.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_off0000c51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC51D 5120 bytes
SHA-256: af38e2a1f9739131e0e818b71f70a459a2e8068bd3506b1348544cccf54f8b6f
font_01_sfnt_off0000d69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69A 10168 bytes
SHA-256: 3c10ebf20676cb96a972b46166840e5de0d3f24da35a0485947aac168aaa5c84

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