Malicious PDF — malware analysis report

Static analysis result for SHA-256 0611147a2b055da6…

MALICIOUS

PDF

45.8 KB Created: 2020-11-05 08:03:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a642ebcf0a84de81f4d871db2e7f7f1f SHA-1: 76be4c0287ad987e941e7f551721ccdda723fab5 SHA-256: 0611147a2b055da604e82c84bae49df0ad1c4fdc1ad039903b4432cce7517f69
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to redirector infrastructure or potentially malicious content farms. The primary malicious link identified is 'https://gettraff.ru/123?keyword=ginseng+prices+in+nc+2019', which is flagged as a malicious redirector. The document's structure and content suggest it is designed to drive traffic to these external sites, likely for malicious purposes such as phishing or malware distribution.

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/123?keyword=ginseng+prices+in+nc+2019
    • https://cdn-cms.f-static.net/uploads/4405687/normal_5f9e5236ddc80.pdf
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/f3cd3afa6d7ff.pdf
    • https://dadekojulaza.weebly.com/uploads/1/3/4/3/134320805/72b736553fd52.pdf
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/1a17a8284e5af3b.pdf
    • https://cdn-cms.f-static.net/uploads/4393180/normal_5f8e9c49d08fa.pdf
    • https://ziwodenitisal.weebly.com/uploads/1/3/4/3/134350364/3993253.pdf
    • https://zowutopukanujim.weebly.com/uploads/1/3/4/2/134235103/pileworuw-mowozib-fuvusobuler.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2a2ffc85-be9e-4529-aa84-ace2d4daf324/12922225003.pdf
    • https://uploads.strikinglycdn.com/files/ed9a287b-9326-4056-9801-c914ae775833/maroze.pdf
    • https://uploads.strikinglycdn.com/files/ac499c3d-27f9-4ee5-ac99-dc47f71ce5b9/89825321735.pdf
    • https://uploads.strikinglycdn.com/files/b7f99b75-9799-43c3-b7cf-0a986393cb9d/ccna_routing_and_switching_complete.pdf
    • https://uploads.strikinglycdn.com/files/5c8b374d-9bb0-40bd-8153-be5ee3a31311/9907795605.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007325.bin
a13ae97a4197c1b4bd01197a7c50dedea41cd9d4db90cf2752628d2bb0bc84ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 5372 bytes
font_01_sfnt_off0000858b.bin
d169fc3aa66839f0333babff1bb8fb451d8901a6c475cdfe1f57ecd91678a300
pdf-font-stream PDF embedded font (sfnt) at offset 0x858B 10896 bytes