Malicious PDF — malware analysis report

Static analysis result for SHA-256 0815ac4245ee0b56…

MALICIOUS

PDF

39.3 KB Created: 2020-08-12 08:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f79c6bd04d8a9259d87f7d4f1a1408e1 SHA-1: 6d8c8b42990dbc5528bad74b2f8a5fef0282bbce SHA-256: 0815ac4245ee0b566bd3f6935427e7e124ee4fa4d1e7bc79f787093f3e94851a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a deceptive title and numerous links, many of which point to a link farm and a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=noun+clauses+exercises+pdf+with+answers, which is designed to lead users to further malicious content. The presence of multiple embedded links and the ML classifier's high confidence score indicate a deliberate attempt to exploit users through a phishing or redirection scheme.

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=noun+clauses+exercises+pdf+with+answers In PDF document text
    • http://files.goblinoid.com/uploads/1/3/0/9/130969717/wefegewiwopot.pdfIn PDF document text
    • http://files.rockalumni.com/uploads/1/3/0/7/130775837/3766212.pdfIn PDF document text
    • http://files.keppelcoastcameraclub.com/uploads/1/3/2/6/132695692/4939260.pdfIn PDF document text
    • http://files.lightworkselectricny.com/uploads/1/3/0/7/130775653/jugifiwafoxidineni.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/1/0432/9239/3640/files/bepap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1065/files/emotional_intelligence_2._0_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5209/files/bumedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8438/7238/files/best_networking_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/mosazexezuvozodogeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/83451854722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6766/0706/files/91556984791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/81204467827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/allotropes_of_sulphur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/65378204548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/fizik_asal_momentum_konu_anlatm.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_off00005a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A84 5372 bytes
SHA-256: 0ce9017a75f7772d37b6faee91172a160daf6e8f4ccb166222cc147bb1e171c4
font_01_sfnt_off00006ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE0 10356 bytes
SHA-256: 0475bf71ce61f232672f9ed77915ee190d91fd960356c548992f30dee79317fe

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