Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d329747e60ae62…

MALICIOUS

PDF

40.4 KB Created: 2020-08-04 03:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4765ab9b4a2f805b3669bc1e0fa1ce2e SHA-1: a9e674475000f96306f918e193f63c1627627f54 SHA-256: 67d329747e60ae629089f2cf6fbd99ee316db6d4784490990542ebc5cdad4e6b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to exercises and URLs that appear to be part of an SEO link farm designed to lure users. The ML classifier strongly indicates maliciousness, and the redirector link is a high-confidence indicator of malicious intent.

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=past+simple+and+past+continuous+exercises+pdf+1o+bachillerato In PDF document text
    • http://files.mrwildinghomeroom.com/uploads/1/3/2/6/132696233/dovezemoxena-fulodubazoxa-vizegojisosipux.pdfIn PDF document text
    • http://files.kristinachan.com/uploads/1/3/1/4/131438151/1664941.pdfIn PDF document text
    • http://files.whimsicalwit.com/uploads/1/3/1/8/131858287/950f4.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/1/0434/5351/3881/files/47576140799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/26080974790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/pubodikenexamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/98832232274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/kukajet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/boravujuxevepixosopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7529/files/deviwevut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4188/8155/files/titumupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/bmi_calculation_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0860/5859/files/vuvajaxutujasep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/jon_rogawski_calculus_second_edition_solutions.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 5

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_off00005e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E83 5656 bytes
SHA-256: 1619e143bedb70bf737ecef331306d5856eb6dfe0d0b8b76d604cbef98079aa6
font_01_sfnt_off0000719a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719A 10188 bytes
SHA-256: 60d3980c5c21328ff397651efc6ba83091e57c7db3def92d181665d37bc765c3

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