Malicious PDF — malware analysis report

Static analysis result for SHA-256 001c0c3c921afc4f…

MALICIOUS

PDF

75.7 KB Created: 2021-01-16 16:01:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6b2a54bcc510a7df307d6e34a63887b SHA-1: ed83e580dd90ac9912041785f8105ba750661f4f SHA-256: 001c0c3c921afc4f371ef145d8b7ddcd62b28c46d5fd0c5a00d064411081c67b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. An external URI pointing to 'trafficel.ru' was extracted, suggesting a redirection to a malicious site. The PDF structure and embedded content, though heavily obfuscated, are consistent with phishing lures.

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://trafficel.ru/123?utm_term=fluid+film+undercoating+gun
    • https://site-1166597.mozfiles.com/files/1166597/monster_truck_movie_2019.pdf
    • https://static.s123-cdn-static.com/uploads/4368768/normal_5fe51394d94f2.pdf
    • https://site-1230768.mozfiles.com/files/1230768/free_movies_and_tv_shows_app_for_iphone.pdf
    • https://site-1175290.mozfiles.com/files/1175290/space_buster_2048.pdf
    • https://site-1168077.mozfiles.com/files/1168077/24126059589.pdf
    • https://static.s123-cdn-static.com/uploads/4452157/normal_5fc44261999b9.pdf
    • https://cdn-cms.f-static.net/uploads/4406497/normal_5faac3470eff7.pdf
    • https://cdn-cms.f-static.net/uploads/4402718/normal_5f9dfbad99eb1.pdf
    • https://cdn.sqhk.co/dalubevemex/hjaAVIH/the_walking_dead_season_11_rick_grimes.pdf
    • https://cdn.sqhk.co/makafabakuna/WieZVjj/piano_tiles_3_para_pc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/petikamov/affidavit_of_loss_id_format_philippines.pdf
    • https://s3.amazonaws.com/debamijizozexo/29639282321.pdf
    • https://s3.amazonaws.com/xelimewat/parafowixoxa.pdf
    • https://s3.amazonaws.com/resixexi/56609084982.pdf
    • https://s3.amazonaws.com/jugobimuraje/alcazar_energy_annual_report.pdf
    • https://s3.amazonaws.com/wewuxuviwar/australian_super_balanced_performance_2018.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_off0000e0ff.bin
6862e33c69926a2027dd4a21bf2ce5f0065a1e2a34ba4f1b713127957bd6bfe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FF 5120 bytes
font_01_sfnt_off0000f254.bin
18d9514086aa6792ff361d53fae236894ce0103f65417c1cec9397dca10c9aff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF254 13580 bytes

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