Malicious PDF — malware analysis report

Static analysis result for SHA-256 16afba42a6f56f8e…

MALICIOUS

PDF

51.6 KB Created: 2020-08-22 00:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34a43d9a8ba15cc2b343e3c05152fbc5 SHA-1: a5eab5ea3f50b5468fa50b91105f3c1570efb0da SHA-256: 16afba42a6f56f8e20c762dbed2b2e21fcf853966dce5bb4ab30fe04766e5ab4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body and heuristics indicate a link farm strategy, likely to distribute malware or phish for credentials. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest malicious intent.

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=array+of+pointers+in+c+pdf In PDF document text
    • http://gipagal.lethbridgeelectrical.com/uploads/1/3/0/7/130776783/079b902.pdfIn PDF document text
    • http://files.timeddefense.com/uploads/1/3/2/7/132740804/xevunutuvizepos.pdfIn PDF document text
    • http://files.wayfaringbride.com/uploads/1/3/0/8/130813714/d5f7e62969d82ad.pdfIn PDF document text
    • http://xisago.diamondlightworld.net/uploads/1/3/1/4/131437308/304444.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/1/0431/2973/3282/files/jowixefupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/55951142275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/nirarit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7360/0678/files/gilulefize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/wifinazexowefawupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/bevejal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3089/4999/files/98279376991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/gmat_verbal_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9736/6436/files/multiplying_polynomials_using_algebra_tiles_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/12742260217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/34474304627.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 8

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_off00006d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D59 4996 bytes
SHA-256: 4ddf8d9db41783f141f13975880a61decde5c4e2e4c8a73b69b9dad7fe0b9a1d
font_01_sfnt_off00007e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E69 16092 bytes
SHA-256: e95e11ebd24189e9d72399a68a081df695647547274ac29d67c6cd0a8bf4dc60
font_02_sfnt_off0000b160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB160 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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