Malicious PDF — malware analysis report

Static analysis result for SHA-256 565ec2f63637beec…

MALICIOUS

PDF

40.3 KB Created: 2020-11-09 16:20:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 42c585c25f774ec7f00d8dbeabca1218 SHA-1: 1bb96e6cb1f254ce05e46eb072df1e60ef08e065 SHA-256: 565ec2f63637beecbb31b711a777539ed5a65432ecefc744b515a33481b4f95e
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?keyword=wow+cataclysm+alchemy+leveling+guide'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://traffmen.ru/123?keyword=wow+cataclysm+alchemy+leveling+guide In PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/9887239.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f891b90441fb.pdfIn PDF document text
    • https://zolegezuboz.weebly.com/uploads/1/3/4/4/134462972/pesup-vekaxanetefuwab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393785/normal_5f9c42cc867f0.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/1d2a86be-c373-40be-b087-8db952c7449b/lucifer_and_lilith.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/network_topology_in_hindi_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd1ac360-7f22-4196-b892-6dc5ae9239f9/maxuxelutamopukizuxuwub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/776230fd-4070-41c0-a6bb-21dfdfdd1066/90244247540.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad7077cf-f208-4e91-bf6b-4c517aed6fe1/20652090116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44bf07ee-3510-4929-b109-021aed6f7995/gibagel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae8716b6-7895-4ead-89f0-c34124e3cbae/porafete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b95dc5c4-a23b-4f29-bbd2-04fa54b20367/hit_and_miss_engines_demo.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_off00005ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECB 5524 bytes
SHA-256: 735dc9f035d096a8ca471600fd283c0de9078b96990e1cb70d3bef73f8075ff4
font_01_sfnt_off00007196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7196 10288 bytes
SHA-256: 0b1e31995f3bbe70a43834b233dc0c30e5368c63fc8818f86ac986bd05d7c671