Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2831b4f9f5c835…

MALICIOUS

PDF

42.7 KB Created: 2020-08-09 10:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a170f0b6bc315850d4ba533fdce95b52 SHA-1: ff20dc36c4a9608503a58e351b33f321fa07ce26 SHA-256: ae2831b4f9f5c8353561bc0a7be9eeab43aeba3bf91ee6b673bd1a7a41f44818
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains a URL that points to a redirector, which is likely intended to lead users to a malicious site. The presence of numerous external links, many hosted on Shopify, suggests a tactic to obscure the ultimate destination and potentially engage in SEO poisoning or a link farm attack.

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.cc/pify?keyword=new+dictionary+of+christian+apologetics+pdf In PDF document text
    • http://files.mashamsteamrally.com/uploads/1/3/0/8/130813841/29a89c.pdfIn PDF document text
    • http://files.cotuithistoricalsociety.org/uploads/1/3/0/8/130813531/2156604.pdfIn PDF document text
    • http://files.radiopigs.us/uploads/1/3/0/7/130739996/3867846.pdfIn PDF document text
    • http://files.markjamescabinetmakers.com/uploads/1/3/0/7/130775228/e71f5246.pdfIn PDF document text
    • http://files.clouddanceralpacas.com/uploads/1/3/1/4/131453255/269dd.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/1/0436/8482/3205/files/fusidijerarumanifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8776/files/wanudutet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/5727325415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/xuxoraresi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0280/4898/files/lubojizarujuxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/94147769163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/46777574116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/zinurawegisowosakok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/wordly_wise_3000_book_8_lesson_9_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4738/6262/files/66690625285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/fafavesuruxerigemonak.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_off000066d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 5580 bytes
SHA-256: 1bd3826efb5d8f4acfbe1f0b10be4339c9a97acec68d8ec12647722a7f204594
font_01_sfnt_off000079f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F8 10324 bytes
SHA-256: 59e359a4944c5a926db147baf0afac0994a66af92057f97f77ec81dd793248a5

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