Malicious PDF — malware analysis report

Static analysis result for SHA-256 615adff26a97d2d7…

MALICIOUS

PDF

41.6 KB Created: 2020-08-30 22:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6cb952788059f6e80dcc813045294da6 SHA-1: 9adeb0ab009ddf55403e4a6a53f3ba85b87c99c8 SHA-256: 615adff26a97d2d76f583d3958b3d8706b6d33e4df1227a2b44548b3ae262306
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains the primary malicious URL. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to obscure the malicious destination and potentially engage in SEO manipulation for phishing or malware delivery.

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/wix?keyword=edwin+lemert+primary+and+secondary+d In 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/1/0432/7378/1411/files/subizokezenukewitejufap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/54657567654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7566/5825/files/al_quran_indonesia_pro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4740/3168/files/ruzikik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0351/6824/files/vocabulary_with_pictures_ppt.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8cbfce_37a9d6c8e8d84b24a84f7f48b046bd32.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cd79e3_a95ed1ddfa34495cb81dd374e0ae60f8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_98999d05c9434b8fb7a634a0e4bb6b43.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3290/2806/files/6754935823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/8502453416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6289/3471/files/arteri_karotis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7596/8928/files/70270254923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/bassariscus_sumichrasti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2653/5832/files/matususobipinamexukiken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2625/0917/files/77348247950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/9756/2776/files/cuanto_tiempo_duro_la_conquista_de_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/arabic_films_online_free.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_off000063fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FA 5372 bytes
SHA-256: 840875843a1ae966eed1dbd84c74c30e5ef7a2e3d1323c92e2566b2c4489b040
font_01_sfnt_off00007630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7630 10300 bytes
SHA-256: 4907806c529f07f04f2b1d9fcc813cb7ac4c3381a633f9671c866522de7ca91e

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