Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e075c270871f16…

MALICIOUS

PDF

42.2 KB Created: 2020-11-06 17:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3f752812f29c85f1d936a468fab7b139 SHA-1: de411dd0a5d08785eabee242e6efd016161be523 SHA-256: 00e075c270871f16cbe028c082ea127a68ff494ebb15cc08234198b941349028
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/aws?keyword=idpa+cardboard+targets+free+shipping PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378604/normal_5f8dc8ec864c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372972/normal_5f9007ad85cc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381980/normal_5fa2e08c559b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411228/normal_5f9a7b034aa9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_5fa0775ee5f4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f88c797ae384.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5fa4570b874e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5fa32d763b404.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377112/normal_5fa50393ce9d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xuzinazemu.files.wordpress.com/2020/11/lozofikamedafit.pdfIn PDF document text
    • https://fidunonip.files.wordpress.com/2020/11/madelizopididam.pdfIn PDF document text
    • https://botebofeji.files.wordpress.com/2020/11/15963812645.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_off00006320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6320 5464 bytes
SHA-256: b48e08b8491b40728446fc74b5731acb56a06e86413bc25d2f9d43f5fa666066
font_01_sfnt_off000075ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AB 11388 bytes
SHA-256: 7096cbda533717dd509d591c6db01bfa9656556dc5ad59827af8b3787d71c794