Malicious PDF — malware analysis report

Static analysis result for SHA-256 732bbf38addf3989…

MALICIOUS

PDF

45.5 KB Created: 2020-07-28 22:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a891fb004e2a1d144ccdc33fcc70745 SHA-1: 25b54b8e1dfd5e63577c747794d591583407ac18 SHA-256: 732bbf38addf39893a73a9392b46ed2a00328de64a85d247045e44dd5bc883ed
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector URL (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, appears to be a lure related to 'capitalization practice worksheets'. The presence of multiple embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful 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.ru/pify?keyword=capitalization+practice+worksheets+6th+grade In PDF document text
    • http://files.thesolidrockshop.com/uploads/1/3/0/8/130813797/zaxisufibuxuxigusi.pdfIn PDF document text
    • http://files.brandon-ind-deburr.com/uploads/1/3/0/7/130738823/zewinijo-jirobepoxeduw-bamivemevevedo.pdfIn PDF document text
    • http://files.shopsweetnspicy.com/uploads/1/3/1/3/131379034/melegu-gemozoxoguxe.pdfIn PDF document text
    • http://files.wwemd.com/uploads/1/3/0/9/130969012/gepukin_buporezuwizugaf_kamibiwowigax.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/1/0432/0781/9422/files/notetutus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3577/6408/files/72398519767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9368/0547/files/gomizinofubun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/fagax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/6070378288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/wobomixowadajiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7784/2584/files/8754732500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/muvabeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/rejenusedasojusolivib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/10439773708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.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_off000073e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E9 5504 bytes
SHA-256: 26cb3394d3d59bc6ede41fe2400a9b11ae6c4ff3d0f34dd725b04b69c08ff729
font_01_sfnt_off000086b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B2 10028 bytes
SHA-256: ef33c6499acf8a967abbadd7b4e1f97d09297cc37e4a33a1b04462dbc94005ca

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