Malicious PDF — malware analysis report

Static analysis result for SHA-256 6083cf404c4f96dc…

MALICIOUS

PDF

83.9 KB Created: 2021-04-08 02:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3049d282106759567e16a6c84da231f5 SHA-1: d4a9767afaf1335b3558389666edee4c76244ef9 SHA-256: 6083cf404c4f96dc141c36dc56681502f13a75e9d3ecaf8c5cb4a37928d57282
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, contains keywords related to app downloads, aligning with the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xezojetit.ru/wix?keyword=xender+app+download+apk+2015
    • https://cdn-cms.f-static.net/uploads/4413373/normal_601aec74a15df.pdf
    • http://wonder-ita.fun/majilosaratizisuxu536cf.pdf
    • https://cdn.sqhk.co/badaxiloru/fciiPgg/30856323447.pdf
    • https://static.s123-cdn-static.com/uploads/4366622/normal_60068fbfdd604.pdf
    • https://static.s123-cdn-static.com/uploads/4488582/normal_5fe26442e4b19.pdf
    • http://gejejok.iblogger.org/large_format_film_cameras_for_sale.pdf
    • https://cdn-cms.f-static.net/uploads/4476436/normal_5fd2d85a070fe.pdf
    • https://cdn.sqhk.co/nozelenid/7mhhiaL/lonigarokije.pdf
    • http://nout-sale.site/16995667008q9j1j.pdf
    • http://hookup756.fun/2899215399144fly.pdf
    • http://islandlandscapesbb.com/common_speaking_english_sentencesr2e54.pdf
    • https://static.s123-cdn-static.com/uploads/4493209/normal_5fc93ffc14c91.pdf
    • https://cdn.sqhk.co/nuzozuni/fhjihbm/mokopudilunulun.pdf
    • http://cheapestshop.xyz/5186416199e1g4s.pdf
    • https://cdn.sqhk.co/zinazejoras/aifBhe0/41814521967.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://tasefabomodewiv.epizy.com/lulaxidavox.pdf
    • https://s3.amazonaws.com/wejuvono/vidmate_apk_mirror_version_2._27.pdf
    • http://tuvawewopuje.rf.gd/gezixezuvumi.pdf
    • https://s3.amazonaws.com/jadudusujuje/conceptos_de_derechos_humanos_de_diferentes_autores.pdf
    • https://s3.amazonaws.com/zesotat/signos_y_significados_en_el_teatro.pdf
    • https://s3.amazonaws.com/xakusineba/lifuzug.pdf
    • https://s3.amazonaws.com/xalexojaxipud/xejiwuzubotowam.pdf
    • https://s3.amazonaws.com/rebesudanolo/catacombs_guided_tour_paris.pdf
    • https://s3.amazonaws.com/ruzumeb/deketezi.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_off0000fe2c.bin
395e62ed229b0b33dc3319936f150da545fd47786c712b619f6a9be32d30b947		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2C 5016 bytes
font_01_sfnt_off00010f4c.bin
4cef3b74fd6883882f37d401f60c1d21eaa21f7cf58f4357983139d5b1705a23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4C 10724 bytes
font_02_sfnt_off00013414.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13414 4324 bytes

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