Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e012928fbc363fb…

MALICIOUS

PDF

56.2 KB Created: 2020-11-01 15:47:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 23cee82b5677e3f5b5fcb656301afcd5 SHA-1: 54f78889b74c6f2791e7aad1f9469a97c7785b32 SHA-256: 9e012928fbc363fb1e681659b7a13b355e2571749788d211267a7789e519969c
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ggtraff.ru/aws?keyword=domino+s+training+manual', is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, suggesting an attempt to drive traffic to potentially malicious or SEO-manipulated content. The ML classifier strongly indicates maliciousness.

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://ggtraff.ru/aws?keyword=domino+s+training+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374689/normal_5f8afa4977fd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f8ce7dd7dd38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375889/normal_5f8d02ac3d0cb.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/1/0485/2786/8059/files/60552270080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1436/4059/files/27636723370.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/wepujogedadigutitamox.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/biblia_cristiana_reina_valera_1960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8773888-1396-4e1d-aea6-d8b7a0218bc7/97529657036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7823/1229/files/pete_the_cat_christmas_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3071/5805/files/ragizofetidivige.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_off00009b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B16 5004 bytes
SHA-256: 85f76a4b41ff3108712703c35822528f286740068d136c42b055db89a6d2b6a9
font_01_sfnt_off0000ac07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC07 12384 bytes
SHA-256: 172e7fcaecc9c4621aebfdba9a7632afcbb25c541cc2b076a1e7cb656d2c2ca1