Malicious PDF — malware analysis report

Static analysis result for SHA-256 483b2b4d73dda726…

MALICIOUS

PDF

81.0 KB Created: 2021-03-30 13:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af061bb2372d2ed33072841ee2316083 SHA-1: d5c2c0ef81ab00fe94c81b420ab23edd8c1dc4c4 SHA-256: 483b2b4d73dda7264eb943ff635f19180ab6284a5c003d02754244e462407d99
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, suggests a lure related to 'rainy season in los angeles'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://vilenefex.ru/strik?utm_term=what+is+the+rainy+season+in+los+angeles
    • http://ins.expert/94265432993w34ff.pdf
    • https://cdn-cms.f-static.net/uploads/4372087/normal_602e4deeb076b.pdf
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5fe7ce90cf99f.pdf
    • https://static.s123-cdn-static.com/uploads/4367279/normal_5fec1dd558014.pdf
    • https://cdn.sqhk.co/dajebala/fijjbhb/2112td_tower_defense_survival.pdf
    • http://sfr-webmail.com/ligesijusamiokex4.pdf
    • http://anarchymedya.com/free_music_video_maker_appy7pu0.pdf
    • http://visiblawty.com/x_men_dark_phoenix_torrent_downloadiib54.pdf
    • http://fragcups.com/rotirakozigujagawetcwif.pdf
    • http://mukinumatonewo.getenjoyment.net/ranaxixasoz.pdf
    • https://cdn.sqhk.co/neganobasiwe/giCN4gf/pomutorakovizezi.pdf
    • http://xidufefonudug.sportsontheweb.net/calderas_acuotubulares_y_pirotubulares.pdf
    • https://cdn.sqhk.co/lexaxemiji/fdibkji/70683533306.pdf
    • http://mon-cmso.best/74632933393utcl7.pdf
    • http://sanelobazigi.medianewsonline.com/76147443122.pdf
    • https://cdn.sqhk.co/lasetipulos/fihhbtm/zelle_chase_pending.pdf
    • http://termometr-medikal.site/fosekh3ofh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_47ffc2c4fb0c440abcac9a3909bfbdd8.pdf?index=true
    • https://4b67404f-136a-46a0-9cf3-151f2d38faab.filesusr.com/ugd/241fd5_0015d1f32c6743e5adb3e669d74ef554.pdf?index=true
    • https://c4fca8c4-0f54-45c3-ae88-320069d86c16.filesusr.com/ugd/ac0d21_1114f3350f3d49d09d312a28e22011ae.pdf?index=true
    • http://madepadejatutof.onlinewebshop.net/antas_ng_wika_quiz.pdf
    • http://ligoroxenafof.atwebpages.com/bafenu.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_off0000f07b.bin
696656c9d1d8ef522cbee08037599b249d52bb686926c00497dd89b29313de50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF07B 4848 bytes
font_01_sfnt_off000100f7.bin
cb499744d559a0ee390b3de20ea912fcc08efc79690ef838d52ec578174755dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100F7 11556 bytes
font_02_sfnt_off0001282a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1282A 4324 bytes

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