Malicious PDF — malware analysis report

Static analysis result for SHA-256 f693add409ce39be…

MALICIOUS

PDF

50.7 KB Created: 2020-07-28 06:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e666e1e8d7e94e272b09dc4725bf71ec SHA-1: ec844b6c1ba7a1fde9dd7e055c098424edb10ce2 SHA-256: f693add409ce39be87cf57b64404527de2a5107738a757361e1813d63ba42241
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link points to 'ttraff.com', a known malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of links suggests a distribution or phishing attempt.

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=field+work+report+conclusion In PDF document text
    • http://files.gesamtschule-kunow.net/uploads/1/3/1/6/131636941/be622.pdfIn PDF document text
    • http://files.autismbuddies.org/uploads/1/3/0/9/130969327/rebowujumux-dexufedat-medopivisa-bogom.pdfIn PDF document text
    • http://files.sprucestreetnyc.org/uploads/1/3/1/3/131380440/f77012b719aff5.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/1/0437/6307/3181/files/mufikosolabodixab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/2145666234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/vuxovim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/miwudujezudodiviso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/dujetofibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0642/5248/files/pepigedesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/zixozesoliwama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/wufura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/wobiviluxosezikup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/dokod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/46676713685.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_off000089d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D0 4848 bytes
SHA-256: 83af966510da4b7a170aef1f2311d377cd59bb7550d6c75699064f05dd9b2e1b
font_01_sfnt_off00009a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A6E 10416 bytes
SHA-256: 068c2ce396b9bc213bd7dd0567c3d771185e537947d047e752dd0197ae2ab192

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