Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc4b1d41e2a2514d…

MALICIOUS

PDF

52.8 KB Created: 2020-08-14 18:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75c8b7e3dc690f4efb15131e44b5f08f SHA-1: 75dedc436c8ddb2b467a7a7d64a92f9ec4070b6e SHA-256: bc4b1d41e2a2514d8e272c2aca377858a1e7fa39a5be89ab69164a1b9292c7fd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the same URL and references a 'guide', suggesting a social engineering lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used to obscure the true malicious destination.

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=basic+ecclesial+community+guide In PDF document text
    • http://files.loreescience.ca/uploads/1/3/0/7/130738970/2320681.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/1/0431/8865/0142/files/xufenuzotij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/zotejuvuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2446/0445/files/3433463711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/31202645108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0632/7957/files/vakuwixekasesodunezunuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8747/0499/files/sujuvipetaferisesujomiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7370/7925/files/25331414570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/jafuxutimimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/pokemon_emerald_rare_candies_gameshark_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1562/7175/files/mefavosimofukoxodizolow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9604/7783/files/60307709005.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 1

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_off00009229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9229 5316 bytes
SHA-256: 43f4e1bdc9c67a2b6db76f3b0c5081f991ee67c8e7cbc1af8e4c99deb415c505
font_01_sfnt_off0000a42b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA42B 10240 bytes
SHA-256: 3821a1ddf2fd4a0d07fc9ef512e937c8ee1b13ace2e1fd9020f07ec22ff3be33

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