Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f4a641f1ff36ec…

MALICIOUS

PDF

46.4 KB Created: 2020-08-04 20:13:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 620b191ea249bbf659b068979c98c665 SHA-1: 992ac537f86d151c41a68a89225d1cbf45f99998 SHA-256: 29f4a641f1ff36ecc2e9aa192454968dcea2722fc96536173309ae6b43847e6a
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, with the primary link identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a title related to muscles and the wkhtmltopdf application, suggesting a lure to disguise the malicious intent. The presence of numerous Shopify-hosted PDF links indicates a potential SEO link farm strategy to obscure the malicious redirector.

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=m%25C3%25BAsculos+agonistas+antagonistas+e+sinergistas+pdf In PDF document text
    • http://files.kingtonfoodfestival.co.uk/uploads/1/3/1/4/131453170/nojejixorigata.pdfIn PDF document text
    • http://files.woodyshticks.com/uploads/1/3/1/3/131379612/ritozo_luwubuvilul_bizifodoli.pdfIn PDF document text
    • http://files.kcbcweb.com/uploads/1/3/1/3/131380292/gezodikegazaj_rujamaboze.pdfIn PDF document text
    • http://files.scdentallab.com/uploads/1/3/0/8/130813757/wumiganer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0519/3885/files/organized_crime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/vuvogefizobudukomulus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/gepofegapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4399/3238/files/61079099135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/buduwurajabewom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0300/files/ios_8._1._1_jailbreak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/kizuwemojebadunavasufezaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/rasile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2060/5848/files/automatic_car_parking_system_project_abstract.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/minecraft_helicopter_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3241/2311/files/78551051755.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 5324 bytes
SHA-256: 6e2632e1eca51efd9d18c3222e02428d15ff7a1cf0a1fad2f00228f52b3e2ac9
font_01_sfnt_off0000752b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752B 12800 bytes
SHA-256: c212669f7dbba871fb2100805e214ec9e79747441a8596bc24ee295c30ff0480
font_02_sfnt_off00009bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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