Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a740d46f205cede…

MALICIOUS

PDF

45.0 KB Created: 2020-08-11 22:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccaf3dfb4834adff14a8e4bf83aeb5d4 SHA-1: 7b8c992ddd6ce0e20a278ce47faa91aeba8a58c9 SHA-256: 0a740d46f205cede1aab1733d8bb263e64252addd95d0a6a9980f19f2e46b3fe
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as a "cheat sheet" download, but they redirect to a malicious domain. The ML classifier strongly indicates maliciousness, and the presence of redirector links confirms a phishing or scam attempt. No scripts were extracted, but the document body and heuristics point to a link-based lure.

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=bootstrap+4+cheat+sheet+pdf+download In PDF document text
    • http://dudidubev.catherine-cooks.com/uploads/1/3/0/7/130740596/5f092efdaf42d0.pdfIn PDF document text
    • http://files.anthonymichaelscatering.com/uploads/1/3/1/0/131069992/sibufo-gobiz-mebomebuwamil-gopena.pdfIn PDF document text
    • http://kugisamot.rooftopmissions.com/uploads/1/3/2/8/132814930/4607180.pdfIn PDF document text
    • http://files.cheyennebrubacherphotography.com/uploads/1/3/2/3/132303013/0c21d7751b4f5.pdfIn PDF document text
    • http://wegoti.laptopdatabase.com/uploads/1/3/0/8/130874633/mibozimar.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/1/0437/8587/9713/files/44781835579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/fobubitaxidisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8446/8644/files/psychological_testing_and_assessment_cohen_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/air_pollution_control.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/96479719499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/puradefovotut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/free_online_car_repair_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/rogimewememolivuxodasewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81236671698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/captivity_of_negativity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2476/1510/files/arteriografia_femoral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/91128079496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1713/2456/files/19785080549.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_off00007316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7316 5472 bytes
SHA-256: 454315d1b434cdb3c32a07eb34c1c1c81f93c9f61b555b015b168b9b780f8d3a
font_01_sfnt_off000085c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C3 9552 bytes
SHA-256: 0768421c67bc55fb0795c65e9dab591e9c722d57129880b9cabb5cdbd2af5afa

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