Malicious PDF — malware analysis report

Static analysis result for SHA-256 b969e0a465e5d471…

MALICIOUS

PDF

75.4 KB Created: 2021-01-12 11:09:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 793a0a5a23651ade005495751f9cf680 SHA-1: ee7292470c18f44aa0f37f46992521105bd234e4 SHA-256: b969e0a465e5d471f285559eee19576b69e8599437ce769ba6137cf151e18c17
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically pointing to 'traffset.ru' and disguised as a printer datasheet. This indicates a phishing attempt to lure users to a malicious site. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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/aws?utm_term=brother+dcp-+t710w+datasheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5fb5bd1f83e63.pdfIn PDF document text
    • https://site-1178112.mozfiles.com/files/1178112/sumobarijagigunanefo.pdfIn PDF document text
    • https://site-1171784.mozfiles.com/files/1171784/infinity_gauntlet_stones_images.pdfIn PDF document text
    • https://site-1172308.mozfiles.com/files/1172308/vewoxobada.pdfIn PDF document text
    • https://duxegolukazokun.weebly.com/uploads/1/3/1/3/131398215/pupamaxedudamadure.pdfIn PDF document text
    • https://xanodupujariris.weebly.com/uploads/1/3/0/9/130969381/fefunuj_sidaxiliroli_nixajolawom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f8b3cc7a230d.pdfIn PDF document text
    • https://site-1168264.mozfiles.com/files/1168264/cardo_packtalk_bold_owners_manual.pdfIn PDF document text
    • https://lovarewido.weebly.com/uploads/1/3/4/3/134322716/zetewuzoded.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/vawoginele/dusobodukidigo.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/acidosis_lactica_congenita.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_off0000da6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6C 3120 bytes
SHA-256: 16a0685b1af8f7ff3286410c82d065b2ef9dd16f5cc5e004aadb0dd239daad33
font_01_sfnt_off0000e59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59F 5576 bytes
SHA-256: 7774a5148e413e7332edbe0b83d4cd755623530de6c0a7d065b5a525935e6ec5
font_02_sfnt_off0000f8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AC 11696 bytes
SHA-256: d3dc6385ce22116e534868007c79700a208533a0de542673db08538c98b4e80a

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