Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1564bbaabb6583e…

MALICIOUS

PDF

34.8 KB Created: 2020-08-01 05:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fd7255f672e0ec7d575383d9ecaa995 SHA-1: fcc89854f268b42f3456211da8d9c8c8678348ea SHA-256: c1564bbaabb6583ea2b041cd87f3ebf03c7fae77b2bde8b66fea6246a28574ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, identified as a link farm. One critical heuristic indicates these links point to a malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=virtual+earth+worm+dissection`. The document body, though heavily obfuscated, also contains this URL and numerous other PDF links hosted on domains like `cdn.shopify.com` and various other file-hosting sites. This suggests the primary purpose is to redirect the user to malicious content.

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=virtual+earth+worm+dissection In PDF document text
    • http://files.ensemblemusicahumana.com/uploads/1/3/0/7/130739595/vafipedikilidokuvowo.pdfIn PDF document text
    • http://files.coloradocattlewomen.com/uploads/1/3/1/4/131437123/fedew_sepokasiz_liweli.pdfIn PDF document text
    • http://files.firesportukgolf.co.uk/uploads/1/3/0/9/130969356/tanurisu_nelazomemi_gipesoxefotedo_nubuxudo.pdfIn PDF document text
    • http://files.ctlymelight.org/uploads/1/3/0/8/130813054/pusedugadova-tulugip-rodasizagidiv-zejivamatenef.pdfIn PDF document text
    • http://files.dylanness.com/uploads/1/3/0/9/130969819/860cb.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/1/0433/9515/4069/files/junigeporigasejije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0659/8040/files/30524583984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3437/files/wopofujaxodiboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4958/9668/files/nodalipuwaxixozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/86380536447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/kinopaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/debaxowume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8729/8714/files/48973636382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/jiruruzufibuzejaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2572/6625/files/39703326455.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_off00004a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A74 5236 bytes
SHA-256: afc62d07a29f90335f8375f33669b8d03c2e128527db9e02fc5db20021682b55
font_01_sfnt_off00005c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C25 10008 bytes
SHA-256: 78481f9a751bc9a1b79fc80efdfd1666edc99b9fbb37c7b194eead740c9de730

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