Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a0d4df19819e69…

MALICIOUS

PDF

67.7 KB Created: 2020-09-13 00:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7bb55a668edd85ec0716f78c482fdd1 SHA-1: 8d7d9f5dedcc9dd4a44608f68192b6cc3faa345b SHA-256: 73a0d4df19819e697bf9400493dedc56cbd1d3518af042dadc8614e0a1666855
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to appear as free templates, but they redirect to malicious SEO link farms and redirector infrastructure. The primary lure URL is https://ttraff.me/wix?keyword=free+no+trespassing+letter+template, which is part of a link farm strategy to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the heuristic findings.

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.me/wix?keyword=free+no+trespassing+letter+template In PDF document text
    • http://wawutenew.akoyahealthandwellbeing.com/uploads/1/3/1/4/131437622/2887418.pdfIn PDF document text
    • http://vegijem.berrienspringsvirtualacademy.com/uploads/1/3/2/7/132712116/kulazine.pdfIn PDF document text
    • http://files.qmworkplacement.com/uploads/1/3/1/6/131636697/41322fe.pdfIn PDF document text
    • http://files.seectimeout.net/uploads/1/3/1/8/131871622/jitabatas.pdfIn PDF document text
    • http://files.fussball-musings.com/uploads/1/3/2/6/132695571/sedigitova.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/13ae68_01b962a5451e484ead67b26652605a40.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1df9ea_c1fe2a467fab4e6f9ced44878e911e13.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/lmg_mounted_and_loaded.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/mulozabiwokejixivitel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6407/3128/files/apprendre_a_lire_cp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7706/5121/files/dillon_s_auto_salvage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/tekken_3_game_install_now.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/77040794499.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB730 2828 bytes
SHA-256: dd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21
font_01_sfnt_off0000c12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC12A 4880 bytes
SHA-256: 08bc88dbc09d682eb93f5d5a1a400949d99761d9ef668e5fbce2ca5488908ea1
font_02_sfnt_off0000d1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A3 9904 bytes
SHA-256: 1285db3ba696eb7b267c8f0f9ffa2e01886f88f583506d33f7ac39bb8f2bceea
font_03_sfnt_off0000f37d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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