Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47b514839c21a63…

MALICIOUS

PDF

80.4 KB Created: 2021-04-04 14:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55b85aedaca4071dba3f1fbdfc3f7fa4 SHA-1: e248620cddff567e971aaa98f90932e776c57c97 SHA-256: c47b514839c21a63454475b165779c3cd1df9dcb44f5df7028bd4ab78dc2ad9f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. ClamAV detection further confirms its malicious nature, classifying it as a 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, suggests a lure related to 'government unit test review answers'. No scripts were extracted, but the presence of external URIs and the ML classifier output strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=government+unit+1+test+review+answers
    • https://static.s123-cdn-static.com/uploads/4502906/normal_60059d9a6349c.pdf
    • https://cdn-cms.f-static.net/uploads/4480750/normal_602115da59f6f.pdf
    • https://cdn-cms.f-static.net/uploads/4366344/normal_602a9ae5d058b.pdf
    • https://cdn-cms.f-static.net/uploads/4497071/normal_6042b5c770add.pdf
    • http://tefitagesev.mypressonline.com/xevedowi.pdf
    • http://dotenipago.medianewsonline.com/what_is_a_level_1_leader.pdf
    • https://static.s123-cdn-static.com/uploads/4404116/normal_5fcb51c3aae98.pdf
    • https://cdn.sqhk.co/wejagamewo/OOCgjPC/free_fire_emote_stickers_whatsapp.pdf
    • https://cdn.sqhk.co/walamalesumi/ut9gcja/24296158646.pdf
    • http://mokenolovulonom.medianewsonline.com/losovalezobaxunipu.pdf
    • http://mapugukabazewu.scienceontheweb.net/rapaterifetipeguwifupomo.pdf
    • https://cdn.sqhk.co/fabokofe/qw7FUjc/zosusofaxofo.pdf
    • http://ladujose.sportsontheweb.net/mexelufitibokexidaja.pdf
    • http://mapugukabazewu.scienceontheweb.net/62399876255.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/winumigutam/how_to_make_money_online_gta_5_xbox_one.pdf
    • https://s3.amazonaws.com/pasutiz/litany_of_humility.pdf
    • https://s3.amazonaws.com/fixararololu/20884138186.pdf
    • https://s3.amazonaws.com/gewuwasi/tone_it_up_app_review.pdf
    • https://s3.amazonaws.com/xalasawu/basics_of_electrical_and_electronics_engineering.pdf
    • https://s3.amazonaws.com/wofaxil/pidejanepewi.pdf
    • https://s3.amazonaws.com/woxotopapozokev/25372026772.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c2.bin
9f734a9d875320a97d9b9f77f07b714fa389001b3bfc8cfe9defbeaddf9f7af3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C2 5032 bytes
font_01_sfnt_off0000f8e5.bin
180af72d0d6f50dd3bf3b7336651e17a66ea7ca0a7bdb6d140bbf0bf7c42f89c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E5 11188 bytes
font_02_sfnt_off00011f2c.bin
440b3ede0c25df950aed69164220a8caa44108d54563ae21d99fc1559bff7be8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F2C 16116 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.