Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5196fbaa957c87c…

MALICIOUS

PDF

87.2 KB Created: 2021-03-01 21:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd46ba365232ed603c0a8c7f83559429 SHA-1: 12957e51477f400c8a0e2c41fc68df528f4296bf SHA-256: c5196fbaa957c87cfb756a4978f7c4fb724e0a1c51d17b610880bcf099b9a18c
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, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'lozipotod.ru', which is likely used to deliver a secondary payload or conduct phishing. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URI and the detection signature strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/strik?utm_term=ong+orality+and+literacy+pdf
    • https://cdn-cms.f-static.net/uploads/4385847/normal_6021ccbda4bcb.pdf
    • http://romeita.fun/27412399645x3swp.pdf
    • https://static.s123-cdn-static.com/uploads/4384316/normal_5fc746d8b74d7.pdf
    • http://sallely.xyz/julorenemakobovozexoqubrf.pdf
    • http://stroiline74.ru/fifty_shades_of_grey_full_movie_download_filmyzilla_in_hindif7z7m.pdf
    • https://static.s123-cdn-static.com/uploads/4445130/normal_60068d14d1a70.pdf
    • http://ag-management.space/dufemigewesaxododeredebir4e8b1.pdf
    • http://maxovulosaxa.22web.org/john_deere_d110_riding_mower_tire_pressure.pdf
    • https://static.s123-cdn-static.com/uploads/4375352/normal_5fca2eae808c5.pdf
    • https://static.s123-cdn-static.com/uploads/4416304/normal_5ffba2989e23e.pdf
    • https://cdn-cms.f-static.net/uploads/4459791/normal_60199e592baf2.pdf
    • https://static.s123-cdn-static.com/uploads/4452626/normal_5fcacaf1e191c.pdf
    • https://cdn-cms.f-static.net/uploads/4453551/normal_5fd1a6ccbe8e7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xalasawu/autocad_architecture_2014_tutorial_for_beginners.pdf
    • https://s3.amazonaws.com/tikofaketonub/latitude_longitude_worksheet_answers.pdf
    • https://s3.amazonaws.com/fulazelof/convert_between_units_of_time_worksheets.pdf
    • https://s3.amazonaws.com/zifozujiwi/gupugixo.pdf
    • http://tafobinememen.epizy.com/87933526078.pdf
    • http://gusukeru.rf.gd/bartleby_text.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_off00011a27.bin
ee469865b87e66e7339e64eb22e885063f966fcfa3538fe4996f9cd3bc1f6c88
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A27 5272 bytes
font_01_sfnt_off00012c2f.bin
07cbadc154417fc976b5941c80a25e710df048d106f526a6069760c670baf527
pdf-font-stream PDF embedded font (sfnt) at offset 0x12C2F 10304 bytes