Malicious PDF — malware analysis report

Static analysis result for SHA-256 646612e105237267…

MALICIOUS

PDF

42.4 KB Created: 2020-08-23 05:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f05aed261e4b0d376c6b8771d6e32336 SHA-1: a21b40080ab751c4d547ee6f8b9547e02705ab91 SHA-256: 646612e10523726791151ceeeb211269a3abdd2b6d2d05e6e9108a5c786a7175
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, many of which point to redirector infrastructure designed to obscure the final malicious destination. The primary redirector URL identified is https://ttraff.ru/pify?keyword=spanish+1+midterm+review+answers, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users into clicking it under the guise of academic material. The ML classifier strongly indicates 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.ru/pify?keyword=spanish+1+midterm+review+answers In PDF document text
    • http://newijese.chappaquaptastem.com/uploads/1/3/1/6/131606490/5857591.pdfIn PDF document text
    • http://sebopenat.omninsw.waggamatters.com/uploads/1/3/1/8/131857120/zejenosatiza.pdfIn PDF document text
    • http://fodexa.perchancetheatre.com/uploads/1/3/1/3/131384600/a803713e2fb1d8.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/1/0434/8693/7253/files/30170070735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/wajitazopovomaxutosovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/como_construir_techos_verdes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9816/files/26124325558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/what_is_an_electric_motor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0028/0726/files/appetizers_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/ganexin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0025/1036/files/zumoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/boresejerug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/pig_enter_the_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/jetovokulesiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7668/8799/files/7394756452.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_off00006699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6699 5476 bytes
SHA-256: 7ae8d33f2e2b8588bcd11fb816dce5da46f49644e50ec849cdee789c439c1f41
font_01_sfnt_off0000791b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x791B 10456 bytes
SHA-256: 1910029d69324ad71cb2b786f43b405116b1ed35979bb5c4a4f7e44ebdbae283

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