Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a165ef6a62b9b8a…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 10:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5bb56fcb1fc6ed6b5d441cc9ea50c44 SHA-1: 8a8559d171e9dc6677268254d59096eb4b7b3eff SHA-256: 6a165ef6a62b9b8abe3d36b10145e9025038534c0b636f9a427ece2494eb3d8c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external resources, many of which point to a redirector service (ttraff.com). The ML classifier strongly indicates maliciousness. The presence of a malicious redirector link suggests the document is designed to lead users to malicious sites, likely for phishing or to download further malware. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic.

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.com/pify?keyword=albertine+disparue+pdf+english In PDF document text
    • http://files.temeculatreeservice.net/uploads/1/3/0/7/130776180/bbf2bb82f619.pdfIn PDF document text
    • http://files.nejnamc.org/uploads/1/3/1/6/131607346/bujowadatasivo.pdfIn PDF document text
    • http://files.udderangels.net/uploads/1/3/1/1/131163854/1938998.pdfIn PDF document text
    • http://laturak.boquetejazzandbluesfestival.com/uploads/1/3/1/3/131380005/6226727.pdfIn PDF document text
    • http://bekuselo.blindpartsonlineaustralia.com.au/uploads/1/3/1/6/131637240/3c1da6bfc.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/1/0432/3147/7922/files/58074828845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/diablo_3_patch_2._4._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/butat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8816/files/mukiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/simozipepipuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6469/files/33526468817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1507/6002/files/nuzunidawes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0049/5260/files/59719063416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4353/6541/files/set_time_day_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/41197546033.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_off000068c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C3 5432 bytes
SHA-256: d0bc761c01380e854e4422fdcb17e1656b165c67ec44d2519fb02ff73bb81508
font_01_sfnt_off00007b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B27 10076 bytes
SHA-256: dacb3f1a6df03dce9a1b5349c5d2ce588d479147dcef430274962ea684849eba

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