Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6dd5440a20afde…

MALICIOUS

PDF

49.3 KB Created: 2020-11-05 09:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 038b7f4e698a7e613be9c12d5acaf85c SHA-1: c330fbf645a7d1b2745307fbafd8831fba0f0a21 SHA-256: 0d6dd5440a20afdef98f7f55748eab59f32d51158d29a8b98ea96d0909566e1e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links, one of which, 'https://gettraff.ru/aws?keyword=2008+kia+sorento+repair+manual+free', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to a '2008 kia sorento repair manual free', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/aws?keyword=2008+kia+sorento+repair+manual+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f8abf9b9973c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424933/normal_5f9cdc83483b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375528/normal_5fa0a08067984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f94531db00cd.pdfIn PDF document text
    • https://jidamusalaf.weebly.com/uploads/1/3/4/3/134378250/3555526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381340/normal_5f8c4adc6bfa2.pdfIn PDF document text
    • https://sipasegeremiraf.weebly.com/uploads/1/3/4/4/134404187/kitazozifip_fixapasike_lisalawoduni_mevawowo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zalomi/76774569218.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/a_love_contract_with_the_devil_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/intoxication_arsenic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad19d2df-da31-4f90-aa1f-1c1195d032fa/9190342300.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/moodle_univ_angers.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFB 5484 bytes
SHA-256: 13eb1727d4ed612cde4376c5221888f736e63fa150e0c3f8e3dfd9c29314bd07
font_01_sfnt_off0000928c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928C 10972 bytes
SHA-256: 1343a1291f3bfc3365931cce582da95179b5c2b3dc4905c0100ced074fced1e4

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