Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d612575d1571d47…

MALICIOUS

PDF

45.9 KB Created: 2020-11-05 22:57:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: fdc7d00b34845557f6997a78af2e69dc SHA-1: 194d55bd5cf97907bb39ade4b483f4f456d840fc SHA-256: 2d612575d1571d47fc8c6b9d884fa1a0d1e78c740af29ccaa52a9252994763a7
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded link suggest an attempt to lure the user to a malicious site, likely for further exploitation or phishing.

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=brian+freeze+welding In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f881690c55ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387050/normal_5f8cc29ae2330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375352/normal_5f8994aced430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_5f87d8abe3f1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368474/normal_5f890d5c9a57e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gopuze/harry_potter_pictures_to_draw.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/tezufabugaderowazosaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3605a7eb-7f78-4709-8725-b3924a5cf522/48168116326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8591bb40-f3ac-4901-a724-7a9e6ef2b5ea/snake_goddess_names.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/nugudunuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/computer_capsule_for_nabard.pdfIn PDF document text
    • https://s3.amazonaws.com/giwurode/liwis.pdfIn PDF document text
    • https://s3.amazonaws.com/sodoxi/comparing_linear_relationships_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/nawelujozak.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BB 4688 bytes
SHA-256: 1fffa200da7283866e577daad88565384cdea5b8f173a3f6ec6b0848209be870
font_01_sfnt_off000076b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B9 11380 bytes
SHA-256: 884fa592822f16158c2cd0c505b7a0f34ac0203ed395a5fd8a748e823847798f
font_02_sfnt_off00009cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF3 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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