Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a3e9df20662516…

MALICIOUS

PDF

40.7 KB Created: 2020-08-22 23:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c7538214c6a06e60577db59cf5e718b SHA-1: 62215e649ae44e42fb00da31584a7db72980a6ff SHA-256: 05a3e9df2066251637e99400f348f39ccdd9b1ce157ce3c1b85bd227f9f6cee1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=sheet+metal+forming+nptel', which is also flagged as a malicious redirector. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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=sheet+metal+forming+nptel In PDF document text
    • http://tonejaz.expressivetherapiesutah.com/uploads/1/3/0/9/130969060/9042592.pdfIn PDF document text
    • http://files.dodici-azpadu.com/uploads/1/3/1/6/131606951/januwuk.pdfIn PDF document text
    • http://lokofib.eganvillerotary.com/uploads/1/3/0/7/130739745/c14269b5cd.pdfIn PDF document text
    • http://vomapaxa.roxannesmith.ca/uploads/1/3/2/7/132740214/mujefedeko.pdfIn PDF document text
    • http://zamematir.tintawitaelderliving.com/uploads/1/3/0/8/130874038/8938673.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/1/0434/1963/1765/files/blue_cross_blue_shield_provider_manual_texas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/58242503161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0076/6369/files/zogelaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9198/2491/files/emerald_tablets_of_thoth_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/74940319350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/75250082361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/zikovigasumufexemumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/invitations_for_60th_birthday_party_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7806/5059/files/fezufegewalalisil.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_off00006131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 5240 bytes
SHA-256: 31e133071e396d4bb454eecb59fbe7b8a94d98e98127b8efc5349fefda1fcfa5
font_01_sfnt_off000072e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 10376 bytes
SHA-256: 9ff1e8cd47a8c15fa1a1cb41eaf080e4cad070497ab29de8b4e46e1e7a7dd92e

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