Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c9980fe889b9260…

MALICIOUS

PDF

51.3 KB Created: 2020-08-08 18:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7be26a490b9427ab7f1b21dfd3de4f43 SHA-1: 64d9153175645ebd126d5178c2603f5530ec654e SHA-256: 4c9980fe889b9260946a095bf90627f13e2e3671b39e3d3adf211f1e9900c992
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure related to a book title, and the file itself is structured as a PDF. The presence of a malicious redirector link suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution.

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=berenice+poe+pdf In PDF document text
    • http://files.luismaldonado.org/uploads/1/3/2/7/132710748/46953e6.pdfIn PDF document text
    • http://files.ecogrowhawaii.com/uploads/1/3/2/6/132681513/wekufutese_gizorapo_vevajavemuk_xetesutumed.pdfIn PDF document text
    • http://files.andrzejbojarski.com/uploads/1/3/0/7/130740062/c087c0d289d.pdfIn PDF document text
    • http://files.rmdobermans.ca/uploads/1/3/0/9/130968935/9960535.pdfIn PDF document text
    • http://misal.toyama-book.org/uploads/1/3/1/6/131606407/rimeforatimexijinif.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/1/0434/3939/0872/files/b._ed_psychology_book_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/lefavulofipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1048/0533/files/gilemogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/pigukuzovukog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/guide_to_tcp_ip_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8486/4917/files/xawonozomolejorefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/lubabejezugulanereferud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/cement_plant_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/present_simple_present_continuous_exercises_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/nevodomiruwitajuwasuk.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_off00008c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8E 4776 bytes
SHA-256: e82ff65fbeab0675b9170422e9b9a326242434df2b31bfd865dfa6b9ee1f2ffa
font_01_sfnt_off00009ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE2 10368 bytes
SHA-256: b8f15a8364cc54be9261356df17655ecb4433ef33f8bd7cca277620446d5c3ce

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