Malicious PDF — malware analysis report

Static analysis result for SHA-256 090da99844daa477…

MALICIOUS

PDF

65.6 KB Created: 2020-12-20 04:36:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8bd57a969551f750eef7b62d9e105efc SHA-1: 29d6532044c99da659f486f2b2d13a802fa5a25a SHA-256: 090da99844daa47777be3cd56fd31a209ef964805ae424761217610e6040d1ae
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to 'traffset.ru'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or redirection mechanism. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=meeting+planner+template+free PDF link annotation
    • https://zugasunisozabij.weebly.com/uploads/1/3/4/7/134759734/xitabi_tijesuludakobi_topepilepe_wawediv.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/lapemos.pdfIn PDF document text
    • https://tuvaruwa.weebly.com/uploads/1/3/4/7/134711775/5cbd0f475ce1.pdfIn PDF document text
    • https://sanokigoj.weebly.com/uploads/1/3/4/8/134863934/ranojubetin.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/aa8bda79-7013-4023-a8f4-64fecad889a9/volume_of_a_triangular_pyramid_equation.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/4183960307.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/davis_drug_guide_metoprolol.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29253a3bf4b14abb3bccc/t/5fd18599b1f69267714f809c/1607566755969/train_tracks_2_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dc94c5a-c9f6-4c56-ad73-19f07f9aa2e1/777505276.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/fishing_report_arneson_s_resort.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfa651491241adc457b50/1606220390923/heat_in_changes_of_state_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc86293f-865e-438f-b486-5e52ca4b2764/jawajitas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67c5aa23-a302-4793-a45f-a3925534240c/fidisezutusel.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/government_of_mesopotamia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae896566-47a3-4919-a0cb-3be1d9ff183d/debajut.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_off0000c6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C7 5048 bytes
SHA-256: 48630bafbb85e9a79ee9a304925ae05dbdf02d357bf0377a237b2e3827f91326
font_01_sfnt_off0000d7f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F4 9880 bytes
SHA-256: 746199d009e43b7101ab94c335b1eea4f9b5edbb59543455fda5205f36fc52a5

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