Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f66ae104cf74e3…

MALICIOUS

PDF

48.5 KB Created: 2020-08-22 12:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6eac6fbca3db811bf6a575bb5d33956 SHA-1: 3f698e2668da33e59e3c3d52426d7c7238ad7f14 SHA-256: f5f66ae104cf74e3fca3844a9f38273d327d0b58b4f1670fea611c68471eeb26
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a link to an 'instruction manual template'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link.

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=instruction+manual+template+with+pictures In PDF document text
    • http://files.vegasvoicelessons.com/uploads/1/3/1/8/131856308/4359346.pdfIn PDF document text
    • http://files.patelp.com/uploads/1/3/1/4/131407492/gamojoderoluzufid.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/1/0432/9114/8454/files/sesuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3990/6209/files/zuwunagiwil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/nipekugugivulexixenawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/pasusulafugabej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/minecraft_how_to_use_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0843/2027/files/wunatidekofutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4121/0024/files/jamubipavobewujuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/administrator_roles_and_responsibilities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3595/1257/files/96773797051.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
🗂 Part of campaign: patelp.com 4 samples

Related samples 6

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_off000080c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C2 5200 bytes
SHA-256: dc6654b3486bd67cf9d7f18594d25fea50ca084ba41323c3ae469e1380c1ca31
font_01_sfnt_off0000924a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x924A 10244 bytes
SHA-256: afbd42270865e947b34a4a5d98f45788814a7dc2e5463e370ae4762bebf38257

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