Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60d1f5c6c571e49…

MALICIOUS

PDF

52.0 KB Created: 2020-08-12 06:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18b852ce7cf3d4b0965505140a90dbc6 SHA-1: 4b1e14e6e2775c720d1ab7cec25a0c19211b2e17 SHA-256: a60d1f5c6c571e49c91e8bcc9d433d8b186a36c207eaf989d6cd4f7d6022eeca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to potentially harmful external sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.com/pify?keyword=atrybuty+%25C5%259Bwi%25C4%2599tych+pdf In PDF document text
    • http://rarotad.uevoices.com/uploads/1/3/1/4/131453109/256290.pdfIn PDF document text
    • http://files.richardsrobots.com/uploads/1/3/1/4/131453896/8069365.pdfIn PDF document text
    • http://files.catherineluckychang.com/uploads/1/3/1/4/131437725/4996099.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/social_security_form_ssa-_521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/jezubizazanavomil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/poradusukuvufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/getofudesum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7614/files/keto_diet_plan_for_weight_loss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/gupudeguzomusovidufimed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6226/2936/files/refowejaguteforekukege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/76451158037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/afroasiatic_languages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0813/files/76249018960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/19557252965.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 5

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_off00007ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA1 5076 bytes
SHA-256: 1820853f31d8e185b83b5676fa676829e41016abb9629c2952b2edbb4d678e3d
font_01_sfnt_off0000900e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900E 10980 bytes
SHA-256: edf6595e03573d2d25c3713f0ae49f0a0cd73904fd77b1a1b8be2c659624968c
font_02_sfnt_off0000b345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB345 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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