Malicious PDF — malware analysis report

Static analysis result for SHA-256 74316fea74a1b994…

MALICIOUS

PDF

40.3 KB Created: 2020-08-10 13:19:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31c2bf5ea4a9701cbfeb0a19cb29bb31 SHA-1: 27c299874a59cfad95e1b4dbcf320dc6523f99d1 SHA-256: 74316fea74a1b994ddf935d69deab0b25cde1d0ca55eedaf0e72ed2cd1f66604
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links, many of which point to a redirector service that is associated with malicious activity. The document body and heuristics indicate a lure for free downloads, specifically mentioning 'Ccna book free download pdf', which is a common tactic for phishing or malware distribution. The ML classifier strongly indicates 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.cc/pify?keyword=ccna+book+free+download+pdf In PDF document text
    • http://files.eboostconsult.com/uploads/1/3/1/4/131438477/3939519.pdfIn PDF document text
    • http://gipuk.samflynn.org/uploads/1/3/1/6/131606260/jefenuka-mezapa.pdfIn PDF document text
    • http://files.onceuponatimewells.com.au/uploads/1/3/0/7/130776208/a1b55d08de3eac.pdfIn PDF document text
    • http://files.phillyyouthdancefest.com/uploads/1/3/2/6/132682051/3f86c299a51.pdfIn PDF document text
    • http://files.aztecroguefoodsllc.com/uploads/1/3/0/8/130813516/rukubikozifisakive.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/1/0437/9279/3757/files/antrenmanlarla_geometri_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9767/6192/files/gamixudobifixupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6490/1284/files/logapezamuxomil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/2287450788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8611/7032/files/svn_to_git.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4429/0205/files/factorio_4_to_4_balancer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/11792188889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/westlife_my_love_piano_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/lukinexidabiwaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/setubowiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/10109725017.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_off00005ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE2 5172 bytes
SHA-256: f9d21c7f0c56db52aea3381cbf9e324ac693fa94e5c5e4663f0864d122e3b0f0
font_01_sfnt_off0000708c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x708C 10560 bytes
SHA-256: 2a1d723844548efc4e4913c9bc14a0d5298b5bec76271a7938a2017e9577ba73

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