Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c8d4f0c1211f48…

MALICIOUS

PDF

46.4 KB Created: 2020-10-17 10:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ceac2a6e95afde84b48c760ec2f089c5 SHA-1: 7227bc29fc9ee64bf3d2fc43ead53dde938bd2a7 SHA-256: 62c8d4f0c1211f48f37b292f0726b7153b8085ec8c918fda9fd14f4e2322db39
154 Risk Score

Malware Insights

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

This PDF document is designed to trick users into clicking a link disguised as a relevant resource. The embedded link, https://gettraff.ru/123?keyword=gas+turbine+engine+book+pdf, is identified as a malicious redirector. The document also contains a large number of other PDF links, suggesting a link farm or SEO manipulation tactic. No scripts were extracted, but the presence of malicious links indicates a phishing or redirection attempt.

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=gas+turbine+engine+book+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f88c24cd88a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5f8a333f79ea3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f8a15ee32fa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371806/normal_5f8927581d902.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f8709fbacd83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f872179a44ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f88861e98272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f8a3fafa22bc.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/3006a333-eb51-44c0-92e8-0f90525c9e88/86670210144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0a284bc-6b21-45d0-b0d1-f18bbf8d3b4d/48386873769.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ce1d7ed-1044-4fbd-9789-29c0821598e2/bujel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d99c3e1-3b6e-407b-a326-8f358de60e8c/jinojavuwopewagizadamix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb8aaaf-40d2-4123-869b-a50f9eb2dbbc/9881467239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27bcbc4c-df7a-4570-a5fa-758e3d9a450f/79402238286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6818/4994/files/82142247085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4372/3690/files/41716878583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4157/8399/files/21318929056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2344/9760/files/ukulele_shop_near_me.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7731/3727/files/83300707910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4922/1785/files/80427930139.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_off00007500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7500 5412 bytes
SHA-256: 57d780eb2523bfcbf268fb4f649e08bb2c812d869ba06f502f1394407e3eef8b
font_01_sfnt_off0000877e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877E 11004 bytes
SHA-256: a23a88669af67deb67148777cc74505ca641fffaad549a4078dbb81bb8bfb056

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