Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5984aabb33e014…

MALICIOUS

PDF

40.1 KB Created: 2020-07-08 21:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 5751e8ea29345f6d46e16a63b81d5a6f SHA-1: ac190fc5a8ffe970155c4bc12d6656054e4a0008 SHA-256: ad5984aabb33e01495cf8a5023b769d388d3a76f8e5573db21936def73a4863c
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'ttraff.cc', indicating redirection to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to a 'Toyota yaris car 2011 manual', likely a lure to entice clicks on the embedded malicious links.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=toyota%20yaris%20car%202011%20manual In PDF document text
    • http://files.jessyceleste.com/uploads/1/3/2/7/132740398/fbd467eef.pdfIn PDF document text
    • http://files.trilogytennis.com/uploads/1/3/1/1/131164252/7215195.pdfIn PDF document text
    • http://files.petersburgchurchofchrist.org/uploads/1/3/0/7/130775282/panimisalavotopab.pdfIn PDF document text
    • http://files.afchoir.org/uploads/1/3/2/6/132681316/vabuxivasodemur.pdfIn PDF document text
    • http://files.srpdesignstudio.com/uploads/1/3/0/8/130814868/fuzenidenazu.pdfIn PDF document text
    • http://files.pwr-ga.com/uploads/1/3/1/4/131453648/sixijof_gejuwutojedi_kipef.pdfIn PDF document text
    • http://files.alltheriversintheworld.com/uploads/1/3/0/7/130739039/f2d6f27beb3bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zoroxozuwo.files.wordpress.com/2020/06/23913445138.pdfIn PDF document text
    • https://lomimewogox.files.wordpress.com/2020/07/pizemekujafibibuki.pdfIn PDF document text
    • https://lasisupaziza.files.wordpress.com/2020/07/wesinobi.pdfIn PDF document text
    • https://kidelipubosu.files.wordpress.com/2020/07/43189935485.pdfIn PDF document text
    • https://fuxolapelaf.files.wordpress.com/2020/07/17529332727.pdfIn PDF document text
    • https://giwubijadefe.files.wordpress.com/2020/06/nirisovuxamapejixetubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.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_off00005f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F20 5088 bytes
SHA-256: efcf1b9f77579a3742027bf829438d259dc07134810f5cf7c0977e3124afbe28
font_01_sfnt_off0000704d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704D 10400 bytes
SHA-256: 45df06405fee2c7e75be20c391fdfa8486741ed277e71fc1efdada33783f3f17

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