Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b139ee1869f3338…

MALICIOUS

PDF

46.2 KB Created: 2020-11-06 18:33:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bd622b30f7a8122b2130d30ffdc98e1b SHA-1: 392d182df2bac7593ca4626cdcf3c53f4003ab57 SHA-256: 6b139ee1869f33382f640b21b81d68333267c732de4e31946457c15ed05c0917
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, https://traffking.ru/123?keyword=2000+chevy+cavalier+owners+manual, which is disguised as a vehicle owner's manual. The ML classifier also strongly indicated maliciousness. This suggests the document is intended to lure users to a malicious site, likely for phishing or malware distribution.

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://traffking.ru/123?keyword=2000+chevy+cavalier+owners+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f874dd9aa810.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410194/normal_5f954137c241a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5fa131cc9ef00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385631/normal_5f961d15267e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380545/normal_5f9f1d14a8d3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5f8a27da2aa66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5fa1ed8e844ba.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/fufaragebo/book_of_vile_darkness_3.5_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fa7a2aa-1a93-4482-8172-c26f0c6fe2c1/reasons_refills_torrent.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/51294174032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad47eeec-347f-4331-bd50-8f9429ec5a37/43389764754.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2a0416-9d0d-49cf-9586-147ac546a8fe/turn_off_related_videos_youtube_embed.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/97117165645.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/analytical_geometry_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/noreribapitimup.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_off0000685b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685B 5272 bytes
SHA-256: e830e552b6df3f35477511d8f690035b3f4e4ff8ea25eaf77fb872ef918822a8
font_01_sfnt_off00007a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A15 10272 bytes
SHA-256: 91d0d428dddee5a03f64ea4b6a3c73cf21d90f89a1a7913a29093b11bf273f27
font_02_sfnt_off00009d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D34 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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