Malicious PDF — malware analysis report

Static analysis result for SHA-256 67333219f84d7852…

MALICIOUS

PDF

58.3 KB Created: 2020-12-03 11:52:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f988d0455c375c4cf4a974955dda465a SHA-1: eff986b92d7ea4f79178a43da3a2b075321a7af8 SHA-256: 67333219f84d785221f2ef674df717758b185febc8065dfa4cfece2f93ccd9a8
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffmen.ru, which is likely used to host phishing content or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to an 'accident report', suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=accident+report+bay+area
    • https://cdn-cms.f-static.net/uploads/4368962/normal_5f9f8ce587cf9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc3a01a8ef7301f8b21e4b4/t/5fc798739dfc2a404524c462/1606916212666/stomach_ache_causes_ibs.pdf
    • https://static1.squarespace.com/static/5fc0ea1fa8793968640865e0/t/5fc18450eaf37e3b64d5e0b7/1606517841553/42535700732.pdf
    • https://s3.amazonaws.com/jeworurowam/anaconda_2_full_movie_english_free.pdf
    • https://static1.squarespace.com/static/5fc6e663bcf5f06bcb75839b/t/5fc8729cdcb5b260797c66b8/1606972060501/purple_glitter_fairy_live_wallpaper.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf080cc750a3b5a04eed4/1606217857485/political_geography_definition_oxford_dictionary.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe080af3de5e49b52b2d3b/1606289419404/nhac.vui.vn_ng_ca.pdf
    • https://static1.squarespace.com/static/5fc00570a3bf4b14aba44e61/t/5fc2e3a44e98326c0270723a/1606607781402/kudikob.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd2cd324eb4b4552af80ad/1606233300101/74685767980.pdf
    • https://static1.squarespace.com/static/5fc1a00dd49dd124473946a2/t/5fc88961d6e0cc37e33f9c0a/1606977890311/hemi_diaphoresis_causes.pdf
    • https://static1.squarespace.com/static/5fc12c5140f1034a5caa9112/t/5fc74dc97995075abde1a6f1/1606897097611/88309385482.pdf
    • https://uploads.strikinglycdn.com/files/cf3d7be2-0864-4c1a-a9ba-8bff8e9fb8a3/flight_tracker_apk_pro.pdf
    • https://static1.squarespace.com/static/5fc280b3405d5340f333d31f/t/5fc48a3b61e25426e1c92c97/1606715964762/14611376346.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe76ec9b1ed03538ae3115/1606317805700/88880073591.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac7c.bin
cafec4c92d800d976869cccc2735294c5b1e686389bf5ce114d7e680ff882d0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC7C 5088 bytes
font_01_sfnt_off0000bddb.bin
4d99f43d95e2ef1c8e36a1e884b0bfffbb0f2e2b18ee3cb4b871255699d34d56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDDB 9028 bytes

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