Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3046def6e5d525d…

MALICIOUS

PDF

47.4 KB Created: 2020-11-05 10:31:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a509bd33c366be914839c0fbabc52236 SHA-1: 364fa5921c35c1bfec9b6f0e4051cf7a57bbc2e8 SHA-256: d3046def6e5d525d5c58d78fc87f71faa26ee8d427e66fd9d0e4608092a97a99
204 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to disposable hosting and redirect to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics as a malicious redirector. This suggests the document is part of a link farm designed to lead users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/strik?keyword=aces+limited+brands+schedule In PDF document text
    • https://zunifoxorim.weebly.com/uploads/1/3/4/3/134320692/8131969.pdfIn PDF document text
    • https://sixodajumam.weebly.com/uploads/1/3/4/3/134311071/bevedepevo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389820/normal_5f91c3f034784.pdfIn PDF document text
    • https://vezexozozufizus.weebly.com/uploads/1/3/4/3/134372857/425c5ab2691a8.pdfIn PDF document text
    • https://nukewixe.weebly.com/uploads/1/3/4/3/134385223/269741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419225/normal_5f9693c9224a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f9dd9a01c9e5.pdfIn PDF document text
    • https://zixamagexiwu.weebly.com/uploads/1/3/4/0/134012381/8895865.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375352/normal_5f9c010f53471.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/c25f730.pdfIn PDF document text
    • https://laguvibokabab.weebly.com/uploads/1/3/4/3/134383318/zolagekopuxonajozol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7113f895-e812-4606-8629-60955133725f/zesesitovupude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/1660/6660/files/34009360040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bade6a14-cbaa-4739-a8fc-7e0bbcd406bf/vezujibujeritiradereka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70524b35-faae-4539-a994-3d3ae91f561a/dujoporetava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3644/0733/files/wosumegonige.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_off000072ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AD 5308 bytes
SHA-256: 6755a759e34eab329bdc925f885d781530a9e658dd0093361255c76a855086aa
font_01_sfnt_off00008485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8485 14332 bytes
SHA-256: 97ea666a59b88822cd7a8f79b1b578c84f37f1e91e1b05051fc6d2a5cbb2d771

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