Malicious PDF — malware analysis report

Static analysis result for SHA-256 53621a28344e134b…

MALICIOUS

PDF

42.3 KB Created: 2020-08-20 22:15:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f84d29fa8776c8e4f7f28704f3fa7f6 SHA-1: caac51ce5a5314f9cecaefb88c50f6c77aeaad77 SHA-256: 53621a28344e134b5974d773a433c28d71c4b2c8a9fd36fee316b1f964cf39ab
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com. This domain is used as a redirector, likely to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'admin assistant interview questions and answers pdf', suggesting a social engineering lure. The presence of numerous embedded links, many pointing to Shopify domains, further supports the link farm heuristic, indicating an attempt to manipulate search engine results or distribute malicious content.

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=admin+assistant+interview+questions+and+answers+pdf In PDF document text
    • http://files.miscellaneoussushi.com/uploads/1/3/0/8/130814017/nejexirove-pujozivopemim-papipipuxiv.pdfIn PDF document text
    • http://files.woodstockumc.org/uploads/1/3/1/1/131163669/a9cc1bb77c8.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/1/0428/6241/1942/files/sujenejin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/65882283292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/96142573250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/jibiren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7978/9733/files/renewable_and_nonrenewable_resources_quiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9901/1738/files/15093075809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/public_policy_formulation_and_analysis.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 7

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_off0000679b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679B 5424 bytes
SHA-256: 72872ea9ad85ae1d9ba1161ba91d77a6eabf2e06f99f78a46e7c5722a94ff718
font_01_sfnt_off00007a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A03 10060 bytes
SHA-256: d2a938dae734455e46a519b3b85a81c53be2e57859a71311919e4b6d772d044f

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