Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca168df5127e9f98…

MALICIOUS

PDF

46.0 KB Created: 2020-08-01 21:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c854f7f34eecf8c0715426b31a0ba4f SHA-1: 6e2c9c89abf990dea4c955f2a1c9286d2aa66526 SHA-256: ca168df5127e9f98b2329b8a476a9dadecf86c8211dae5a0053cd5fdc60f656c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This indicates the document is designed to lure users to a potentially harmful website. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, suggesting a broad distribution or SEO poisoning tactic. The document body, though heavily obfuscated, contains the same redirector URL.

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=the+emoji+movie+script In PDF document text
    • http://files.sussexflowinitiative.org/uploads/1/3/1/3/131383838/165768.pdfIn PDF document text
    • http://files.learningwellteachersonline.com/uploads/1/3/1/4/131438460/9257592.pdfIn PDF document text
    • http://files.harvestcommunityschool.org/uploads/1/3/1/4/131452887/viwuzalukaw.pdfIn PDF document text
    • http://files.benkuzay.com/uploads/1/3/0/7/130739227/b5e067920.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/1/0433/0268/2789/files/lolemofuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/javascript_static_variable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1139/2167/files/61746053395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/xexilototavewiwijenuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/rozunibanasofepijuzisakik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/42822620806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/53197193665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0418/2173/files/90416064931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/zonifusudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7599/9646/files/pharmacology_principles_and_applications_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/26966938653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/95678847985.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_off00007619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7619 5016 bytes
SHA-256: 70ef11fa62a8b7ae68a5bdd6256290415bce011e6827e321e51eaba7a6071730
font_01_sfnt_off0000870e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870E 10564 bytes
SHA-256: fb27e16f20ab71065eb65dafcfda2d50a231b3448557d62e2e1f9d8c9325f7eb

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