Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d18035dbd207b4…

MALICIOUS

PDF

54.1 KB Created: 2020-08-19 03:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9a6139b804a3704bfbc429a0536abc8 SHA-1: 256f41b34a9653f28dd5cef98e3aaf67e0f40c4c SHA-256: 83d18035dbd207b458b703983d1deedec4f4d31b970b06959d28459fac4bc499
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to a redirector hosted at 'ttraff.cc', which is flagged as malicious. This redirector is part of a link farm strategy, pointing to numerous PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to lure users into clicking it. The ML classifier also strongly indicated 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.cc/pify?keyword=letter+of+interest+template+teacher In PDF document text
    • http://files.stylecounselatl.com/uploads/1/3/1/4/131483337/b708e42646.pdfIn PDF document text
    • http://xixosejuz.montaukbeachbungalow.com/uploads/1/3/0/9/130969016/mofajunarumokix-funememep.pdfIn PDF document text
    • http://files.alfredartwalk.org/uploads/1/3/0/9/130969873/cc1c10af448f.pdfIn PDF document text
    • http://files.herovision.ca/uploads/1/3/1/4/131453620/gitamu-vatakuderiziv-puxegejepomawo.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/1/0433/0687/7080/files/46552055365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/25565636489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3493/1363/files/boulevard_of_broken_dreams_drum_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2564/4192/files/wedituvugifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/fuviteposidifuxesazujoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8197/1365/files/80348970299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0640/2453/files/77807424429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/bacterias_gram_positivas_y_gram_negativas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/piroterik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6045/3791/files/nuxuvixadedotod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/2319510953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufanagapaxo.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 3

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_off000094d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D9 5196 bytes
SHA-256: e376869a2aa3c96a7761c1a714fdc7a4223c61c63e2181e36c83a6dbe90729dc
font_01_sfnt_off0000a65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA65A 10788 bytes
SHA-256: f345d27018774a7041fac9da2f5c4816f70c50647dec53014c56d5cf57fdfa35

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