Malicious PDF — malware analysis report

Static analysis result for SHA-256 9410aed7894b0df8…

MALICIOUS

PDF

70.6 KB Created: 2020-11-19 05:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: be8b9ec82ee3665acbbb7624a8b53751 SHA-1: b9892435ccb2d9872ed098eef20bcc75c5f0d8f6 SHA-256: 9410aed7894b0df8b79f4de013e5665cb1d28063a7e67cdba44d72beef3cbb07
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The presence of a PDF link farm heuristic suggests the document's primary purpose is to redirect users to numerous external URLs, likely for phishing or to host further malicious content. While no scripts were explicitly extracted, the PDF structure and the high number of external links indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/123?utm_term=points+of+discontinuity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f870e219c79c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5fa9af26eb545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450878/normal_5f9edb28ec7f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486215/normal_5faa0ab5661f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f8eeb9a9a809.pdfIn PDF document text
    • https://belanuxaru.weebly.com/uploads/1/3/4/6/134670531/zimurozibiki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460231/normal_5fa1efc0ac507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483082/normal_5fb3ffa4364a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402707/normal_5f9118b6a198f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_5fa3e8841c2ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368998/normal_5f94bd949086f.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://uploads.strikinglycdn.com/files/fd279236-1b72-4034-a9be-fa243ec67767/sawufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b0d428-3155-41d0-9428-8e39ec27b2f0/87369312791.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB561 4544 bytes
SHA-256: 914e310bb77ad94ce502ad1483385098c3662b95c09fc3fb000e3c3774810300
font_01_sfnt_off0000c4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E3 10996 bytes
SHA-256: c8ae73904cc83f2614d282562c768b96f6f844d448d4e6c984cf1cb60ab7164a
font_02_sfnt_off0000eae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE4 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb
font_03_sfnt_off0000ff4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.