Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7f15c7f2f7c22aa…

MALICIOUS

PDF

69.8 KB Created: 2021-01-06 10:05:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1762a57a5af8f0eab4f235df4d1f9e75 SHA-1: d2b78a363ea2f98dc4a36aa2dae135a3042f23ca SHA-256: b7f15c7f2f7c22aa84fdde426ca5aff4be905a6f01c740f6d3c15d459b88d7b3
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. It contains an embedded URI pointing to 'traffset.ru', which is highly suspicious. The document body, though partially corrupted, suggests a lure related to 'dance macabre ghost piano sheet music', indicating a social engineering attempt to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=dance+macabre+ghost+piano+sheet+music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479445/normal_5fe91372d8657.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/230484a3ad2.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/hidjgje/wifi_file_transfer_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/bajipugotox/hijjdhd/ultimate_vpn_premium_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gisopagipize/ikHjjia/photo_video_maker_with_song_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/hjPjidy/free_survival_fire_battlegrounds_new_update.pdfIn PDF document text
    • https://tarebizadutobi.weebly.com/uploads/1/3/4/3/134310067/kubotilipujexok.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/qhclrif/47919954291.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/wisuw/77146063039.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/20192717454.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/guided_tours_european_parliament_brussels.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/west_of_loathing_curious_copse_solar_array.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/kesozule.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_off0000d3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D5 5452 bytes
SHA-256: bf253a463d6a1988369a58d573e11b824c3f3a85f8a7d8f4651ac4251e9e3d03
font_01_sfnt_off0000e637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE637 10640 bytes
SHA-256: b25a4365c0dbc14beecdaa53566d235b3f8bf903ce86141cc4a3c385a157b9fd