Malicious PDF — malware analysis report

Static analysis result for SHA-256 04907f23a71839eb…

MALICIOUS

PDF

34.4 KB Created: 2020-08-08 13:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74237aceb8c80b160423a7264324d889 SHA-1: 307951f60dc2114b3a9b58b3b4252ef7545152e4 SHA-256: 04907f23a71839eb0fb6b255dd4bdd674dc7d56c075375a6607b3dc2c585b427
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to lead users to a link farm, masquerading as a book download. The primary redirector URL, 'https://ttraff.com/pify?keyword=drugi+svetski+rat+knjiga+pdf', is flagged as malicious. The ML classifier also strongly indicated maliciousness. The file's structure and embedded links suggest it is part of a phishing or scam campaign.

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=drugi+svetski+rat+knjiga+pdf In PDF document text
    • http://files.guesthouseouassaggou.com/uploads/1/3/0/7/130775759/7b61b8.pdfIn PDF document text
    • http://files.exploreniseko-activitycentre.com/uploads/1/3/0/9/130969183/lobamolisozebe-ruvejivafuv.pdfIn PDF document text
    • http://files.pinkbehindthethinblueline.org/uploads/1/3/1/0/131070149/4407690.pdfIn PDF document text
    • http://files.ww2tv.com/uploads/1/3/1/8/131872269/kewaminem-xefavafibida-xogulop-bigedoleloza.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/1/0431/8937/1029/files/jusupagejitunutan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/95867316126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0994/7301/files/roruduboxunuwosirek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4396/3548/files/rifobofoxurolejezotedaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/44500105055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/86945865302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94192334972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7187/1912/files/nopejowenib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/lanafogabamakibezero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/porepawaw.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_off000049be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49BE 5376 bytes
SHA-256: a41dd33c39c643e2d5aaf5f7ffe9b2d31e07006fa4620e364bcddc903825159e
font_01_sfnt_off00005c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C34 9640 bytes
SHA-256: 7048f0ef8eb7273d4c314d7615b97054c4dc188c5b89f25666502a24ae68ac5b

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