Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c88d26daee097ed…

MALICIOUS

PDF

42.5 KB Created: 2020-08-05 22:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb664cf2aea5dbf8dc6172d8041d9340 SHA-1: 5f13313188f25aa48c0b19f628d57bc24fdc5bd3 SHA-256: 6c88d26daee097ed227963415dd4b7703790d60af7f5d4914627629e8692307b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and other benign-looking Shopify links, suggesting a link farm or SEO poisoning tactic to lure victims. The ML classifier also strongly indicated maliciousness.

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=logical+reasoning+tricks+for+cat+pdf In PDF document text
    • http://files.mckeague.com/uploads/1/3/1/8/131871721/gegudilubipu.pdfIn PDF document text
    • http://files.oursaviorsbonner.org/uploads/1/3/0/7/130775823/daruvifidetak_datopitelijelo.pdfIn PDF document text
    • http://files.caaaup.org/uploads/1/3/1/6/131607363/tusuron.pdfIn PDF document text
    • http://files.esydave.com/uploads/1/3/0/9/130969775/7001654.pdfIn PDF document text
    • http://files.xanderkarkruff.com/uploads/1/3/2/7/132741189/65090.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/bolsa_de_valores_de_lima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/too_much_tnt_mod_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6573/7370/files/55051181883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6645/files/25015131349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3092/9827/files/93407224916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7809/6798/files/2016_chevy_cruze_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4833/files/jejibupipajagomuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/96152741293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/kegoxirimiruloxagotaged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6933/3916/files/gejuxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/30571036855.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 5328 bytes
SHA-256: efa10d7c84268f23729124798dd0447aee3ff73d53f911225e45b63bf384dd58
font_01_sfnt_off00007891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7891 10612 bytes
SHA-256: a022ee4844e6760e189a366c534b4351ec6c680bedf3f806714390965ce4acf7

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