Malicious PDF — malware analysis report

Static analysis result for SHA-256 410faadeefcb69c9…

MALICIOUS

PDF

30.9 KB Created: 2020-05-16 23:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 770ddc0745012611fca6c5ef3dc68f7c SHA-1: f91313e6958af7d4b3f2a9cdd632e40c5a472bc4 SHA-256: 410faadeefcb69c9e2368d3737f3bf4057eddbed790be26c70fdf51474d16f0b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, many of which appear to be part of a link farm designed to mimic legitimate content. The document body also contains a URL that aligns with this pattern. The primary attack vector appears to be directing users to these external sites, which likely host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 4

  • 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.
  • 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 http://atelierjademyr.ca/uploads/1/3/0/7/130739269/130739269.html#blended+language+learning+pdf PDF link annotation
    • http://retrofigureprints.com/uploads/1/3/1/3/131380263/9b094ed192ae771.pdfIn PDF document text
    • http://osmiridiumcoin.com/uploads/1/3/1/4/131407292/5885d.pdfIn PDF document text
    • http://fishinglakefirstnation.com/uploads/1/3/1/8/131857029/madikiruz.pdfIn PDF document text
    • http://felitasjewelrybox.com/uploads/1/3/1/3/131398563/3848586.pdfIn PDF document text
    • http://haleymartinez.com/uploads/1/3/1/3/131381167/jipinozoxexudo.pdfIn PDF document text
    • http://ce-carrental.com/uploads/1/3/1/3/131380837/3560196.pdfIn PDF document text
    • http://medicalwhitepapers.com/uploads/1/3/1/3/131398066/gozafawemubu-lanudafebimoda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA4 9756 bytes
SHA-256: d43d079fea35419273d812e45505f80602f304b4a0b3412eedce0eaea4c3a112

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