Malicious PDF — malware analysis report

Static analysis result for SHA-256 d899c3eeb028034a…

MALICIOUS

PDF

43.2 KB Created: 2020-08-19 02:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaaee995ecccf409ab8d0378600c29aa SHA-1: 911fd15b693ea1f235dc701e43979e4c9a293028 SHA-256: d899c3eeb028034a52493982439b6ea631c94a483aadb8f39aa0b6bf5485906c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body, though heavily obfuscated, contains a URL that points to a redirector. The presence of numerous external links, many hosted on Shopify, suggests a tactic to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness.

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=oresteia+robert+fagles+pdf In PDF document text
    • http://fuvepida.tealforteal.com/uploads/1/3/1/6/131606149/nurixedi.pdfIn PDF document text
    • http://xorikugok.youniqueeventdesigns.com/uploads/1/3/1/4/131407668/papep.pdfIn PDF document text
    • http://files.interiorwellbeing.com/uploads/1/3/1/1/131164386/eb7fcb5638834.pdfIn PDF document text
    • http://files.fredpahlke.com/uploads/1/3/0/7/130775897/3729629.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/1/0437/5370/1525/files/40409657026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3524/5216/files/salicilato_de_bismuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/39041660535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7827/8550/files/63868651884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/zomusowaziwudigisumimeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/52902171125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/1830353686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/joripikiwivixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/aptitude_formulas_for_interview.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/15893838613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/beginners_guide_to_social_media.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_off00006b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 5376 bytes
SHA-256: b4a3660a43ce08de8c2689c61446ec15cd0577e357d67f3887416c919a449477
font_01_sfnt_off00007db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB6 10028 bytes
SHA-256: e0f0926d0a23bb9104c8409b6aab3e1135152ecd82cd626c9725cdabdca7bf76

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