Malicious PDF — malware analysis report

Static analysis result for SHA-256 94ae0d5355005678…

MALICIOUS

PDF

37.9 KB Created: 2020-08-14 00:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3a144e3d600fac7d1c28170f2580fc0 SHA-1: 0b21c65779178786682d64dedd18bd64e3346988 SHA-256: 94ae0d5355005678b7778fd8612ec9bca7146ab2326cae9a765e8e48cec192a5
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, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to a worksheet and includes the malicious URL, suggesting a lure to trick users into clicking malicious links.

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=audism+unveiled+movie+worksheet+answers In PDF document text
    • http://bonalamin.tunedinteachers.com/uploads/1/3/1/6/131606289/2b98f7acbda6.pdfIn PDF document text
    • http://files.fdryabc.com/uploads/1/3/1/4/131438471/depiworuku.pdfIn PDF document text
    • http://files.davetanproperty.com/uploads/1/3/1/4/131438453/52fe7b3b.pdfIn PDF document text
    • http://zeroli.weeadventures.com/uploads/1/3/1/6/131607254/bd74a6e24b73c.pdfIn PDF document text
    • http://files.rochonsandshall.com/uploads/1/3/1/4/131406735/kedibetewawevimesuke.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/1/0433/1841/1417/files/51171867379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/13827206008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/bapomefejapunameviwodamed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/ketazevelijujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/43710394396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2020/6758/files/wumitew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/spoken_english_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5023/8101/files/mewotogujokokudufep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8482/5247/files/collateral_agreement_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3933/2251/files/telegram_animated_stickers.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_off0000558b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x558B 5272 bytes
SHA-256: 37c6194fb76379d1a948d261078ce4f2dcaec6cacbbe867c82e97ad0486eb148
font_01_sfnt_off00006757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6757 10396 bytes
SHA-256: a999186ea1f5fa7eefab59d8d2b2b9d2637d90772f6aa35859fa32dfc002674d

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