Malicious PDF — malware analysis report

Static analysis result for SHA-256 75fd50c5c961c705…

MALICIOUS

PDF

40.0 KB Created: 2020-08-21 13:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ef7f1d0dbf61423efd7f8a4142d85d5 SHA-1: 43a8522e5f24a2e3d702b088c50de54cfe034b8d SHA-256: 75fd50c5c961c70592d3a495256d383c5d7166aabb43a4ebcfec829a45f0286a
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content likely prompts the user to install a browser extension or update, a common tactic for phishing or malware delivery. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=arduino+programming+ide In PDF document text
    • http://files.warungfalafelbali.com/uploads/1/3/0/7/130739119/jotijajonulalo_vasaxiso_nufubanevomezir_xilapoves.pdfIn PDF document text
    • http://files.psalmstre.net/uploads/1/3/0/8/130874250/0b73356.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/1/0434/1248/8343/files/benim_hocam_tyt_matematik_soru_bankas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8667/4088/files/73602307466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0618/0758/files/weboxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2816/9382/files/jixerelufegodadumin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/jareguvukuzeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1407/6069/files/48570828524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/esl_speaking_board_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/pafuxemor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2399/6840/files/lavivewiwutadik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7142/files/dafipuzane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1757/6354/files/armored_god_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.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_off00005efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFD 5060 bytes
SHA-256: 6ae1a246471df75ba340e6bfcf08a481631efdd9984f9288805a21fdcd6efd71
font_01_sfnt_off00007013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 10420 bytes
SHA-256: b9f87bc5945b517912eb53013482682f256875af98ee8b4645bdea29baff293f

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