Malicious PDF — malware analysis report

Static analysis result for SHA-256 c81caf49f8df12cf…

MALICIOUS

PDF

43.8 KB Created: 2020-08-24 05:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96c80881686354ffc684072f00b81d60 SHA-1: 30ee1dc54fe81c804de6dd46970719a4b3a008f4 SHA-256: c81caf49f8df12cfc7f08fee573d3b4ee9c6a88b3cae9b034f73538a40e23cb5
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=bonjour++windows+7+64'. Additionally, it features a PDF link farm, with many links pointing to Shopify domains, suggesting a tactic to obscure the true malicious destination. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous embedded URLs, including the malicious redirector, indicates a phishing or social engineering attempt to direct the user to harmful content.

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.com/pify?keyword=bonjour++windows+7+64 In PDF document text
    • http://jezetu.sunmarketingsales.com/uploads/1/3/1/3/131383483/5372315.pdfIn PDF document text
    • http://files.barebeautymilnrow.com/uploads/1/3/1/4/131483083/doborigu-galigozujobo-bozusuraj-xepide.pdfIn PDF document text
    • http://bidobuxus.peterandpaulapixie.com/uploads/1/3/1/4/131454215/kuduj-lumataw-wenuxewud-bofixev.pdfIn PDF document text
    • http://files.piedmontgreencbd.com/uploads/1/3/1/4/131406715/nalakifaseko.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/1/0435/8966/4926/files/sixth_sense_technology_seminar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/xomarab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8828/8675/files/aprender_italiano_desde_cero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/oceans_hillsong_united_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1252/9055/files/57188111324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0698/3333/files/angular_material_formbuilder_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/95231702326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/16047446148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/54644833847.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_off00006e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E30 5116 bytes
SHA-256: 0e8cd40474c6b00579c04ebd5b46357dab5b0cec310daabcdcf94a1260f901e5
font_01_sfnt_off00007fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC6 10308 bytes
SHA-256: cf900fe395bad3327177337d1eeda274a786cbe6759f0765832d67674bd11794

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