Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b96a1be345ecbdd…

MALICIOUS

PDF

34.4 KB Created: 2020-08-11 17:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f84f0b1cd358d5ce7a577d6dd3ca67a SHA-1: 6399e26240cdc9177676b733a12c7347a9c8b8a6 SHA-256: 8b96a1be345ecbdd7c7f0a66a5014dc4fc967fe047a8eeac1205272768ddb836
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, includes a URL that appears to be the primary lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to known malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm or spamming technique. The primary IOC is the malicious redirector URL.

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.ru/pify?keyword=algorithms+and+data+structures+in+python+srinivasan+jagannathan+pdf In PDF document text
    • http://dasono.mylifeisajourney.com/uploads/1/3/1/8/131856158/rimujejoralexel-vawubipam.pdfIn PDF document text
    • http://files.beardsbytes.com/uploads/1/3/2/6/132682076/5754624eef8.pdfIn PDF document text
    • http://files.pipscrunch.com.au/uploads/1/3/1/3/131384635/a80b287fba.pdfIn PDF document text
    • http://files.beaconcoachingandtraining.com/uploads/1/3/0/9/130969424/lepeba.pdfIn PDF document text
    • http://zikisogu.alnmpodcast.com/uploads/1/3/1/4/131407406/tewitowufu.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/1/0433/3754/7929/files/bitokexusinuwamenugumiwas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/zixamasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/paxusevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9074/5246/files/78108277578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/les_cellules_souches_adultes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6857/1298/files/makalah_aborsi_menurut_pandangan_islam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/49076284260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/goravavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/biogeography_an_ecological_and_evolutionary_approach_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/statistical_methods_for_data_analysis_in_particle_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/8052/7527/files/64628548814.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 4

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_off000048b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B5 5796 bytes
SHA-256: 31487cba898d56143b55877997df060a8280c8d2bf7f499932a18e7da5a26973
font_01_sfnt_off00005c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4F 9264 bytes
SHA-256: 5fa9e09ab46f75880364a6472502f20abb8598e08e4cf324b838694903559b83

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