Malicious PDF — malware analysis report

Static analysis result for SHA-256 85fb88d72be2f5ea…

MALICIOUS

PDF

109.0 KB Created: 2020-08-07 06:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b490c6620ac427acd217b4f3cf1d237a SHA-1: c482f422803fe5fc75758c90af7d4d3c7c561562 SHA-256: 85fb88d72be2f5ea943f8801b29aff96494d2f4f8ef4a10356f89f6215719bc7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. This suggests a phishing or scam attempt, likely using the document as an attachment in a spearphishing campaign. The presence of a link farm and a redirector indicates an attempt to drive traffic to malicious infrastructure.

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=dsm+personality+disorders+pdf In PDF document text
    • http://labavap.pilates4womenonly.com/uploads/1/3/2/7/132710621/jigajapegokukar.pdfIn PDF document text
    • http://zekunoz.joshbilickiracing.com/uploads/1/3/0/7/130739275/wojidos.pdfIn PDF document text
    • http://wowalo.johnhunterdesign.com/uploads/1/3/1/4/131438216/kuvujutimuf.pdfIn PDF document text
    • http://files.thepeacecentre.org/uploads/1/3/2/7/132740805/2daa898.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/1/0433/4462/5822/files/jelakopikaposejexezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/94149843553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0267/2798/files/schoenberg_pierrot_lunaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3943/files/33863545685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22411539251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2180/2392/files/52409825081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/7th_grade_math_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/carnage_comics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/power_of_attorney_louisiana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/98490805877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/bienfaits_du_sport.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 4

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_off0001564e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1564E 5076 bytes
SHA-256: 485d7da4d9bc000e1877f3b24b2f809d0f688302bf47b1a7e9d9f4522c83cc39
font_01_sfnt_off0001677d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1677D 15856 bytes
SHA-256: b08dba361a9f2dc04bf1691bc73b242bd9a1a9df53f17f62f3c679b3e8ae8c75
font_02_sfnt_off0001986f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1986F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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