Malicious PDF — malware analysis report

Static analysis result for SHA-256 e193f8e93d03f1f1…

MALICIOUS

PDF

68.5 KB Created: 2020-12-06 17:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26c2adce412ea68d046c364284f1ddac SHA-1: 7949eaf09c1c2abb8ef63bbef1261390188cbd66 SHA-256: e193f8e93d03f1f1c16b16efced2dfb72a0dcd2474c2ecd9540c293fb609b944
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The embedded URL in the document's metadata and body, 'https://trafffe.ru/aws?utm_term=cherub+brigands+mc+free+pdf', is likely used to redirect the user to a malicious site. No scripts were extracted, but the overall structure and detection indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/aws?utm_term=cherub+brigands+mc+free+pdf
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f8ddd8b28788.pdf
    • https://static.s123-cdn-static.com/uploads/4405459/normal_5fcbc704eae21.pdf
    • https://gipivibeg.weebly.com/uploads/1/3/4/3/134341606/nukuzufu-kinogasof-wuwik-pajabenif.pdf
    • https://static.s123-cdn-static.com/uploads/4427097/normal_5fc68352ba8e0.pdf
    • https://static.s123-cdn-static.com/uploads/4460688/normal_5fc93fd7e33aa.pdf
    • https://cdn-cms.f-static.net/uploads/4426409/normal_5f97c9c47e457.pdf
    • https://cdn-cms.f-static.net/uploads/4475559/normal_5fbcf32f7de48.pdf
    • https://zitokafinug.weebly.com/uploads/1/3/4/7/134738680/4dabd2142ad0ef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc140152cf09257bd6e62db/t/5fca4c29887b444c61636a73/1607093289756/90817875017.pdf
    • https://s3.amazonaws.com/pusori/67111116038.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf493cf3de5e49b55a4fd0/1606371645083/cardinal_choice_insurance_plan_2.pdf
    • https://s3.amazonaws.com/wibedubosateg/allen_county_property_records_ohio.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_off0000cdfd.bin
3e115102bb86eb2f38417f703bb97c2ef29584736c235cc32117a7eadb519c80		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDFD 5584 bytes
font_01_sfnt_off0000e0cf.bin
b63ca23b96fd9d0780e9219365248e4f9797fb3d9382bc1a98373e64361b5b3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CF 10556 bytes

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