Malicious PDF — malware analysis report

Static analysis result for SHA-256 7397e1a7e50d5cde…

MALICIOUS

PDF

44.6 KB Created: 2020-08-20 04:08:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 577f8157121f25a6cfc0ca35ad815461 SHA-1: 8e5177580b49976776d42948691094294c88dfa8 SHA-256: 7397e1a7e50d5cdec3c3f837dc02a6dc9e1509464605a85f9e4a64befe5721cc
162 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is used to lure victims with keywords like 'vidmate app 2019 apk'. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or malicious redirection attempt, likely delivered as a spearphishing attachment.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=vidmate+app++2019+apk In PDF document text
    • http://files.ptahoriginals.com/uploads/1/3/1/4/131453897/bukozisakog.pdfIn PDF document text
    • http://files.quranhomepro.com/uploads/1/3/1/6/131636954/937c946.pdfIn PDF document text
    • http://files.ladyslipperstudios.com/uploads/1/3/0/7/130775490/desus-vagowikawituvul-newopanexi-vukoma.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/1/0430/3588/5721/files/fenekegenisawepaloxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7378/1416/files/pajapomefagipozabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0633/4888/files/revan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/97143217218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/ap_literature_exam_2020_multiple_choice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/yakuza_4_substories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0588/5090/files/12000595485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/pathfinder_ultimate_campaign.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/vunidivavebuxawedole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/32700289205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4429/6088/files/fagaseratat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/24828955225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/92831018405.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000667e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667E 2952 bytes
SHA-256: e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0
font_01_sfnt_off0000710c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 5308 bytes
SHA-256: b38780b8134889b73e2f0ca177d924c6308015ffa75a6100ddaa8d0f427ae9ff
font_02_sfnt_off00008317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8317 10044 bytes
SHA-256: d810baef34d0ee2d7f2a8c5b78100fd6dd04d1ad418c43829207c4dc9174a354

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