Malicious PDF — malware analysis report

Static analysis result for SHA-256 e448a08bc9a88511…

MALICIOUS

PDF

73.4 KB Created: 2021-04-03 06:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcfd1ba6dc6760013835d040bf8c5ca5 SHA-1: 7c687638713b5ee2ac4392bd414afc562c15c36e SHA-256: e448a08bc9a88511421bdc4d0861aa7474d3794c0173caf7c2d7b97d8251e300
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely to deliver a phishing lure or malware. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to a movie download, which is a common social engineering tactic.

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://ponafet.ru/strik?utm_term=confessions+of+a+shopaholic+movie+free
    • https://cdn.sqhk.co/vamosopon/gi6ijhf/45946362134.pdf
    • https://cdn-cms.f-static.net/uploads/4412408/normal_5fea405dbb43e.pdf
    • https://cdn-cms.f-static.net/uploads/4481069/normal_600dd75dcd948.pdf
    • http://ooovseanalizi.ru/74749682151tmiac.pdf
    • https://cdn.sqhk.co/mogizufofuj/dge0Hba/99350675296.pdf
    • http://1eyvgo.xyz/download_game_tank_io_mod_apkpz3e2.pdf
    • http://ses-sanobrabotka.ru/gokotikajusemonipa5qoio.pdf
    • http://soldonlittleton.com/5786449126fxrer.pdf
    • https://cdn-cms.f-static.net/uploads/4380392/normal_600e72d5868a3.pdf
    • https://static.s123-cdn-static.com/uploads/4405674/normal_5ff0036696ab5.pdf
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5fd137e8337e5.pdf
    • https://cdn.sqhk.co/jisesixerigu/e3tHgjj/14342433740.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/limewub/klik2_reset_code.pdf
    • https://s3.amazonaws.com/fizaxo/44788178867.pdf
    • https://s3.amazonaws.com/moduluzuxikari/what_inspires_you_to_succeed_every_day.pdf
    • https://s3.amazonaws.com/nagudo/36545667365.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_off0000e018.bin
a3d433e379b235f1cec52fac9f03f5c44b85bdfec089f935098acc78fab08466		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE018 5220 bytes
font_01_sfnt_off0000f1ba.bin
4c942585ef3f9dd7f4a33a043621d30fca38d3a0b567f2f4a0955c23857899a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BA 11884 bytes

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