Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd43951b4dfd467…

MALICIOUS

PDF

75.4 KB Created: 2020-12-26 00:59:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 133b31b31b67b6747b4cdec07acd0b57 SHA-1: 7837538ce8ed42a8358be494f415082bb3862b41 SHA-256: 3cd43951b4dfd467411e77296d96423d5ee4ac71a0c0e9e5f6a5b56dc71746d8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text suggesting it is an 'Airpods owners manual', which is a common lure for phishing or malware distribution. The embedded URL points to a suspicious domain, likely serving as the next stage of the 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://traffnew.ru/123?utm_term=airpods+owners+manual
    • https://cdn-cms.f-static.net/uploads/4368467/normal_5f8a61b56a483.pdf
    • https://cdn.sqhk.co/bagudivibi/eiajcq6/spider-_man_rope_hero_games.pdf
    • https://cdn.sqhk.co/munenetifu/QFjg7bL/battle_empire_rome_war_game_mod_apk.pdf
    • https://vekosakebasagi.weebly.com/uploads/1/3/4/7/134743747/femewosaramate_kamuk_jigawuduvojawux.pdf
    • https://cdn-cms.f-static.net/uploads/4459319/normal_5fc0d25d11cbe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fazujo/iq_2020_circuit_board.pdf
    • https://s3.amazonaws.com/panokojol/80588444505.pdf
    • https://s3.amazonaws.com/memul/destination_b1_descargar_gratis.pdf
    • https://uploads.strikinglycdn.com/files/830fae4a-cf91-4a44-b090-367f1d383ed0/hava_nagila_sheet_music_violin.pdf
    • https://s3.amazonaws.com/mibiwivanetuj/anand_kannada_movie.pdf
    • https://uploads.strikinglycdn.com/files/26efae23-1e24-4a93-8d58-013826fc18ad/wuzafadikokukiworo.pdf
    • https://s3.amazonaws.com/tesodagiwor/dafomosuziliv.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_off0000e9d8.bin
a23600bd31293ebc6db769d462cbd1316d1de9e9dd573102aeeb68069ebfe9cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D8 5188 bytes
font_01_sfnt_off0000fb71.bin
da8193e88506c92c7b7187059fd754f71ef22dfcd13bacf7d9c30bc4c6da47ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB71 10944 bytes

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