Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88f5cbd16c618e4…

MALICIOUS

PDF

73.2 KB Created: 2021-01-08 15:11:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bd976f17412c3d6887fb5417f23c84e0 SHA-1: 050f37e06ce61292912353fdcd23da2ec7f31c8d SHA-256: f88f5cbd16c618e40d0c7a8060e7f6ecc3f5b839622b6309adb6a05ea324fa8b
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/aws?utm_term=canoscan+lide+120+driver++windows+8.+1 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392453/normal_5ff7bd8ab8f30.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5fc4efffe63cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5fd6dcdd1fda9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443594/normal_5fec3367daf7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466408/normal_5fbb3bf9650f3.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/jjdkRgS/gunmaster_gun_cleaning_kit_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404753/normal_5fdbd372ddb71.pdfIn PDF document text
    • https://cdn.sqhk.co/xewumoxu/gQjgqii/installing_pvc_pipe_under_sink.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/gdghia8/cookie_shop_yummy_cooking_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375095/normal_5fb25ec0a853c.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/aea3ecac-6675-4622-8857-e20ab41421d6/unblocked_games_golf_race.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca2aabd-15b7-4ac1-af68-43acff68ff01/46093346270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52072acd-e533-418f-b787-1eb176b9755c/kurupuwepagad.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_off0000e207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE207 5544 bytes
SHA-256: 1b7074f851965424378ceea6099497ad1ecc0b37aa254a5e68e92704afe323d5
font_01_sfnt_off0000f502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF502 10084 bytes
SHA-256: c77e93c0b9e14863b9b66e901e3380935d06440f9def3dcae4c97c280a5e57c7