Malicious PDF — malware analysis report

Static analysis result for SHA-256 169697c6793401bc…

MALICIOUS

PDF

48.5 KB Created: 2020-08-19 19:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54d7e803ca774ba50b3080309aa76b2a SHA-1: 86c59b6df308173ee133b2d7ec828298d1dbbdd2 SHA-256: 169697c6793401bc98cf61044c72ad9fd0f0f9bed446145181ffef768df1660a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The embedded URLs, particularly 'https://ttraff.cc/pify?keyword=cellular+sheet+pile+cofferdam', are flagged as malicious redirectors. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the lure.

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=cellular+sheet+pile+cofferdam In PDF document text
    • http://files.richmondathletic.co.nz/uploads/1/3/2/7/132740181/zozame-rutuwudusi-midawusapunozu-firinatukavuwot.pdfIn PDF document text
    • http://demeja.christianmindfulness.com/uploads/1/3/2/3/132302780/2602933.pdfIn PDF document text
    • http://files.mindfulfamilycircles.com/uploads/1/3/1/6/131637896/1498fc6be00102.pdfIn PDF document text
    • http://kibepaxa.hawaiitherapist.com/uploads/1/3/1/1/131164250/fd975e0.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/1/0430/3601/6803/files/dobejivavokatowesekepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6624/files/gigekagopoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/gafukewirigiximaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/mariam_khan_reporting_live_new_timing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/zobikinedepaxevaraxorusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/bobifev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8995/2922/files/xisedasuxanexogekuwip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6841/4370/files/43372242723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9365/9543/files/77898923008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/ruvalewiwimetepomomasani.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDF 5300 bytes
SHA-256: ef75e66dcf68841281378cc614cafdd2c69a1cfe0c13fc0916dd296e2d737557
font_01_sfnt_off000091bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91BD 10464 bytes
SHA-256: d2e167a197de7d777ec0c787b91e628846b4decdeb061bce0f30b1bf78b1cf64

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