Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c93da4645ba8fbb…

MALICIOUS

PDF

45.2 KB Created: 2020-08-22 03:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3332306f678a20788af3cc5b54b06ea3 SHA-1: 20fcf59333ac593ec573accee08d4eeeb6b1a6ea SHA-256: 8c93da4645ba8fbb2ca8b178ff8e52e919a0b208b2938d31aef02c812d5e6ba9
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a 'business management personal statement template'. This link, https://ttraff.cc/pify?keyword=business+management+personal+statement+template, leads to known malicious redirector infrastructure. The document also functions as a link farm, pointing to numerous PDFs hosted on Shopify, likely to manipulate search engine results and distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=business+management+personal+statement+template In PDF document text
    • http://files.globalcompassionday.com/uploads/1/3/0/9/130969714/tasaputunome_nuxududazumuzo_nivawidekumub.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/1/0431/3127/3365/files/36595349850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/bizasezifolisipafibosoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/who_is_chris_pine_s_grandmother.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/805830081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2108/0475/files/korukewof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0180/7007/files/genetic_polymorphism_in_drug_transport_and_drug_targets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7994/2553/files/globo_reporter_new_york.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/machinery_s_handbook_30th_edition_download.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 2

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_off0000654a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654A 5072 bytes
SHA-256: a1a3cd511913753181f6a643bc08f1daac1b28c0cdead8131461c2cb4079a600
font_01_sfnt_off00007663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7663 10456 bytes
SHA-256: 805e721354fe4f74be2606b5ff72861361f98c7cb04679c0500bef7db0ab8f56
font_02_sfnt_off00009a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A25 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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