Malicious PDF — malware analysis report

Static analysis result for SHA-256 6228f3bf10d3a497…

MALICIOUS

PDF

78.8 KB Created: 2021-03-20 08:56:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3d8dc4c8f90f08a2fa61bfbee2545a0 SHA-1: a98195c4c6dba489886b81a2a81056ecfcd1c032 SHA-256: 6228f3bf10d3a497b03238fe42c1aadd144afe9d55873b92920a3b9139d5aee0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to movie songs, suggesting a phishing or social engineering attack.

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://resalured.ru/123?utm_term=agneepath+movie+mp4+video+songs+free
    • https://static.s123-cdn-static.com/uploads/4483097/normal_5fc68dce4f2f5.pdf
    • http://psychologyrelax.xyz/while_my_guitar_gently_weeps_mp3_sonb241g.pdf
    • https://static.s123-cdn-static.com/uploads/4389387/normal_5ff6d3b64c785.pdf
    • https://cdn.sqhk.co/vulovosovem/jcGIXBK/word_chums_cheat_project_lexicon.pdf
    • http://arbitestpark.xyz/how_to_create_contrast_in_artymgkm.pdf
    • http://siondez.ru/20541391972jcuur.pdf
    • https://cdn-cms.f-static.net/uploads/4453336/normal_601b8927e0e75.pdf
    • https://cdn.sqhk.co/rogevuzazi/DfhcUhc/22034374321.pdf
    • https://cdn-cms.f-static.net/uploads/4443372/normal_6030e6d78b4c7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/falevi/freshers_interview_questions_and_answers_technical.pdf
    • https://uploads.strikinglycdn.com/files/32435a4d-724a-42a8-a280-529a2183cf96/delta_universal_miter_saw_stand_manual.pdf
    • https://uploads.strikinglycdn.com/files/bc3e2f27-3363-4fc7-b328-72d332d261d8/molalapej.pdf
    • https://s3.amazonaws.com/masevewi/22302059664.pdf
    • https://s3.amazonaws.com/likadojivivofu/define_benefactor_report.pdf
    • https://uploads.strikinglycdn.com/files/d860c367-4c3f-42bf-b779-3123c5e4b816/45065393912.pdf
    • https://s3.amazonaws.com/wulagisi/t1013_form_fax_number.pdf
    • https://s3.amazonaws.com/povelenavuviw/6380038275.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e88a.bin
6058b58cce28da3476e85ef41744ec956f44a2b4bb64fb4c56217354fb2f931e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE88A 5348 bytes
font_01_sfnt_off0000fa95.bin
67c80babc0890fdb734308b73febcc69ba7331cc4c04a8699e26c82db9f85b69
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA95 10828 bytes
font_02_sfnt_off00011fab.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAB 4324 bytes