Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e8f552db41fb36…

MALICIOUS

PDF

73.9 KB Created: 2021-02-07 20:30:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 34a504e5feee1920818f3d802dc3ae89 SHA-1: 96dbad43d27cd444c15c0cb126405306c29773e4 SHA-256: 80e8f552db41fb362a3ff5fbfd810316ada6ed6a3f876fda0c08698bed1d7f61
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The presence of embedded URLs, including 'https://baarspo.ru/aws?utm_term=bible+history+timeline+chart+pdf', suggests an attempt to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a phishing or malware delivery mechanism.

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://baarspo.ru/aws?utm_term=bible+history+timeline+chart+pdf PDF link annotation
    • http://koprovk.xyz/fovuvokaveehjkr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458125/normal_5fc73b478d1af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_5fc99ebc18a68.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/eihelBu/87681780458.pdfIn PDF document text
    • https://cdn.sqhk.co/kupawusel/iahZid7/game_dev_story_best_combos.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/jgiijdQ/vetidedurutig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460460/normal_5fda6c33e8f32.pdfIn PDF document text
    • https://cdn.sqhk.co/vitozogog/ieB5gdl/fosozezezunomabikus.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/idhejcq/guess_the_picture_zoomed_in_ppt.pdfIn PDF document text
    • http://skidki-day.shop/download_microsoft_3d_pinball_space_cadet_1._0om4vo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/luropi/angamaly_diaries_mp4_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/guided_tours_of_spain_france_and_italy.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/838427244.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_off0000e285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE285 5688 bytes
SHA-256: 0192c4c063ad3831e36a51b74d204f6eb85d5008b4b79f6a21e51d7906e1cec6
font_01_sfnt_off0000f5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B6 10876 bytes
SHA-256: 617597e9139470155c985aadb272e8b161ca260634ba3a5b76a03c32ed69d1aa