Malicious PDF — malware analysis report

Static analysis result for SHA-256 7940ee22c35a515f…

MALICIOUS

PDF

41.2 KB Created: 2020-08-16 23:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d91a8e15c710b652b0799b57aac7f48 SHA-1: 93f31a22529531e1e1a1027f538d4b56426d80c6 SHA-256: 7940ee22c35a515f6e444421f7801d0f7db5f6d672645115a534a0e59782aa3c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) and a large number of other PDFs, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains a URL that matches the redirector, indicating an attempt to lure the user to click on malicious content. The ML classifier strongly supports the malicious verdict.

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=road+safety+awareness+programme+report In PDF document text
    • http://zovadu.downersgrovecpr.com/uploads/1/3/1/8/131872155/4732046.pdfIn PDF document text
    • http://files.gameart2d.com/uploads/1/3/2/6/132683264/32ee3f82f0db6.pdfIn PDF document text
    • http://files.thescentedsheep.com/uploads/1/3/1/3/131398386/sarotezavakawu.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/1/0432/6037/9286/files/vobipaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2887/3367/files/vijuxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5745/3985/files/soxikex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2578/3190/files/62552427847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0432/9127/files/vedegitolisewole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/dilow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/probability_using_permutations_and_combinations_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/chess_game_for_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8164/6758/files/47427065862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/18030473131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/gestion_de_calidad_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rixiridujafogidubiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/precalculus_practice_problems.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_off000062e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E1 5532 bytes
SHA-256: 97c6610426b6be03d793fc3c9fbea3638be14a561352c77eed7420afa2a7b1d6
font_01_sfnt_off000075b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B4 10032 bytes
SHA-256: b50ae965d962ae8907bb29060ec2e9661ac336fdbdffcaaf1a80fb02ca919ab0

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