Malicious PDF — malware analysis report

Static analysis result for SHA-256 924ed0de87048053…

MALICIOUS

PDF

42.2 KB Created: 2020-08-11 15:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 08e4341f4f98a6d1314840f63621de57 SHA-1: 8c59425563c8ea39ead51db3c37e93448ae46ec7 SHA-256: 924ed0de8704805362adffc64ea74260bb81661c7c39c4e4b72060fb337718e1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text suggesting a lure related to a business book, and the malicious URL is explicitly reconstructed. The presence of a link farm and the ML classifier's high confidence further support the malicious nature of this document.

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=built+to+last+jim+collins+pdf In PDF document text
    • http://files.steakpedos.com/uploads/1/3/0/9/130969075/befudozesitanola.pdfIn PDF document text
    • http://files.soundsofworship.com/uploads/1/3/1/6/131637362/5528954.pdfIn PDF document text
    • http://files.blusheventschicago.com/uploads/1/3/1/4/131410007/fopigijuted-zovop-wimeselana.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/1/0433/4606/7621/files/57008048561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/nimiwimidupuwokelalinem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9173/files/kemepuvaraxuguvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7365/0334/files/internship_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5003/2549/files/47613315603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7125/7241/files/central_bank_exam_past_papers_sri_lanka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4682/1278/files/dimisixijesesofelakekifaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6799/0438/files/ancient_egyptian_paintings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/lamugaruso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8632/2600/files/lokiwozeroner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/gimet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/61283458413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/20452819072.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_off000066a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A1 5328 bytes
SHA-256: 0a46604d2c89ebff283c8515ffd00ee13a21b17bcf702fff4687b9c65b880a19
font_01_sfnt_off000078b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B2 10352 bytes
SHA-256: 8a88141e1f58b2c43cca51b28120f10027a998108bb721876c71dacd78ad64e1

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