Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f296b1ae649c784…

MALICIOUS

PDF

48.8 KB Created: 2020-08-08 10:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 293ec71e8971da9099bd9b05a2330fdd SHA-1: d001449a560649ac286234e0fd26f3c0ed23babc SHA-256: 9f296b1ae649c78495a1f7810cecd0f528fe8f4a7d79efa830ca220cd5fc8239
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, disguised as a business textbook. The ML classifier strongly flagged this PDF as malicious. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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=understanding+business+11th+edition+mcgraw+hill+pdf In PDF document text
    • http://files.coffeynotes.com/uploads/1/3/1/4/131407226/00242bb.pdfIn PDF document text
    • http://redaxisof.roogulli.com/uploads/1/3/1/4/131452821/popadataj_dubojofiwu_wetegupeje_pavalabewinikuw.pdfIn PDF document text
    • http://files.espin-inc.com/uploads/1/3/1/0/131071067/nigunata-jevipule.pdfIn PDF document text
    • http://files.nmffa.org/uploads/1/3/0/8/130874317/wapuxuwupuneda_logalitano.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/1/0431/3687/6695/files/minusezetegunamux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/29269588116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/pamelubosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5470/2496/files/nefitilulatugipibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/tidumup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1384/8733/files/63496776440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1028/5990/files/tobewola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/59227711570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/vababozadumaboxexuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/fesilomanagimiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/vatedew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/tunawutegogapinowij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/fitozuvus.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_off0000774d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x774D 5844 bytes
SHA-256: 24df05f3ad0c635e55b569d208ce3f484db769ad1a84ef09f15b77eff43a1141
font_01_sfnt_off00008b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B24 13364 bytes
SHA-256: a3f835349ac9d99fc3ce27aa5d12a86881fb53501c9c40d1d034266418732593

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