Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a691b4658be5f77…

MALICIOUS

PDF

68.3 KB Created: 2020-08-01 23:22:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43463e10bc74ebb7eeb11d404f3aad70 SHA-1: cf57be7e9e80ba4bdae5ed73536e00b734101723 SHA-256: 5a691b4658be5f77322a515944af68b0ac8f00a51ac1fe0c3644cb7cc07af934
194 Risk Score

Malware Insights

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

The PDF contains embedded links to a redirector service, which is a common tactic for distributing malicious content or phishing pages. The heuristic firings indicate the PDF is designed as a link farm, likely to generate traffic or lead users to malicious sites disguised as downloads. The ML classifier also strongly indicates 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.ru/pify?keyword=1996+dodge+dakota+owners+manual+pdf In PDF document text
    • http://files.perryyoungblood.com/uploads/1/3/0/7/130740092/c408ac.pdfIn PDF document text
    • http://files.iphonerepairllcmccomb.com/uploads/1/3/1/3/131398235/8662033.pdfIn PDF document text
    • http://files.lifespiritwisdom.com/uploads/1/3/2/6/132682905/sumazi-kafasifexap-noregitobesij-paxara.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/1/0437/9816/7709/files/dajumafef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/kusaluvalizas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5962/4606/files/49489564664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/zowufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2051/files/80304283665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/fipezomedup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/34299478785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/mebomunesewalaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/45722879155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/12315645235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/45546184867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/83187984890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/xozikon.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF69 5784 bytes
SHA-256: bc79b1722ad8a690e5340ad0070ede1b511672a813a9556305b55fa64aabb50f
font_01_sfnt_off0000d31d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31D 15836 bytes
SHA-256: c29e358bda1699f9ed170818e29660a63eb9cd68fc7f0728e4d76ba00cc82072

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