Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c8684cae4d5ed6f…

MALICIOUS

PDF

76.7 KB Created: 2021-02-27 15:14:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81b8c215a54f79c017707bf31546f066 SHA-1: 59fd046d1dae4f6646604b60e7966e0879f85d91 SHA-256: 5c8684cae4d5ed6f68a00f1cd777ba222d211de421b91d81e88cd8e97968e873
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting it is used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to 'Youtube prayer to st philomena' and 'wkhtmltopdf', indicating a lure to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://zajinet.ru/wix?keyword=youtube+prayer+to+st+philomena
    • https://cdn.sqhk.co/devisofage/Bgmhiie/crowder_jets_injury_report.pdf
    • https://cdn.sqhk.co/pozedezupase/g6nWVji/88529112400.pdf
    • https://cdn.sqhk.co/levowexesu/D8jbheI/35676420902.pdf
    • https://static.s123-cdn-static.com/uploads/4455370/normal_5fc8a4b8f2e2b.pdf
    • https://cdn.sqhk.co/tigixexaxi/jCid0gj/99909301243.pdf
    • https://static.s123-cdn-static.com/uploads/4466166/normal_5fdcf3b880d6c.pdf
    • http://sawemawe.mywebcommunity.org/51362563479.pdf
    • https://cdn-cms.f-static.net/uploads/4449178/normal_60310193454e6.pdf
    • https://cdn-cms.f-static.net/uploads/4448538/normal_601ee97634af5.pdf
    • https://cdn.sqhk.co/ruwonumatag/GibXji6/bisodeligerivideme.pdf
    • https://cdn.sqhk.co/vemoderama/jggigjd/stickman_knockout_warrior_ragdoll_fighting_games.pdf
    • https://cdn.sqhk.co/wotutovebo/ahaNIiw/vebefititujekavavox.pdf
    • https://cdn.sqhk.co/bibolaned/K7jhgfu/walesi_bardok_kepregeny.pdf
    • https://cdn.sqhk.co/wuvitatutuv/gigdjhM/marble_machine_piano_easy.pdf
    • https://cdn-cms.f-static.net/uploads/4445116/normal_601418077d107.pdf
    • http://bikejesoxatelo.mygamesonline.org/wofepegovexupe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000f13d.bin
3f2d7a37543c239c307cad3c4c9e693b3a09b343999577000c262750ea133f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF13D 5260 bytes
font_01_sfnt_off000102fd.bin
a7efb560d28b73801e0d5ebc34249d725459542e9f2c1e777652704fb53fd5d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102FD 10184 bytes

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