Malicious PDF — malware analysis report

Static analysis result for SHA-256 73e474c2c9e9b8cc…

MALICIOUS

PDF

56.7 KB Created: 2020-08-12 15:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 784188d104047e47a07016b2fc10ffdd SHA-1: 45dd0f185aad49e2532c5ae68c22a73f5251b14c SHA-256: 73e474c2c9e9b8cc66ebb0de2fb10deca4da55925c8b6ca83db73e7c03d7a863
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is 'https://ttraff.cc/pify?keyword=exercice+atomistique+pdf', which is also flagged as malicious. The document body, though heavily obfuscated, contains references to this redirector and benign-looking Shopify URLs, suggesting a phishing or scam attempt disguised as a document download. The ML classifier strongly indicates maliciousness.

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=exercice+atomistique+pdf In PDF document text
    • http://files.thedynamicbody.org/uploads/1/3/2/6/132681767/negemo.pdfIn PDF document text
    • http://files.cheswest.com/uploads/1/3/2/6/132682787/tejobujez.pdfIn PDF document text
    • http://jujebiv.helpmeimgettingmarried.com/uploads/1/3/0/7/130776445/rujusasukewajeweriwo.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/1/0433/0238/7867/files/algebra_for_college_students_robert_blitzer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/62971956679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0899/9074/files/45017868024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/bsc_physics_syllabus_magadh_university.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/amazon_echo_dot_3rd_generation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/59861067111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2598/8757/files/kadirujetifuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/7057736456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3569/7063/files/jarilitakamuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9983/2995/files/49361752548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/alimentos_con_alto_contenido_de_potasio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/73636253350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/pengertian_anoreksia_nervosa.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
🗂 Part of campaign: hoosiernaturopath.org 3 samples

Related samples 2

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_off00009ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD6 5420 bytes
SHA-256: 17b34dbc3bb0c0c997d7944acc165e534ee9968a912011215a6c30b2db1a887f
font_01_sfnt_off0000ad2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2B 12368 bytes
SHA-256: 82d51343fde904856d26240ea52184155b8fb6ad64813a6d41e3e58bfc3afd86

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