Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86010c9e856fc8a…

MALICIOUS

PDF

82.3 KB Created: 2021-03-15 06:31:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63d044da18c900d5d14a8e744dfdf716 SHA-1: d621959c5fc171d006c18a40896fff9a4f66197b SHA-256: a86010c9e856fc8a7de7263c29e2538c530c8d45376e3c483e5c4cbd276dc4d7
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, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for further exploitation or credential harvesting. The document body, though partially corrupted, appears to be a lure related to a game, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=earn+to+die+4+exodus+unblocked
    • https://podogavefa.weebly.com/uploads/1/3/1/4/131438056/4975412.pdf
    • https://static.s123-cdn-static.com/uploads/4455684/normal_5fe02f2809582.pdf
    • http://tajawuxelefa.22web.org/barcelona_song_audio.pdf
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/072c1d1d.pdf
    • https://cdn-cms.f-static.net/uploads/4393776/normal_60215cb4366eb.pdf
    • https://cdn-cms.f-static.net/uploads/4448976/normal_601ef08e94cd3.pdf
    • https://navijaxilof.weebly.com/uploads/1/3/2/6/132696044/wakoratadaku_zibipok_xanajejovene_leliwakodobojem.pdf
    • https://cdn-cms.f-static.net/uploads/4402032/normal_5fd1d429d4ddf.pdf
    • https://cdn-cms.f-static.net/uploads/4445889/normal_602c9e5659d4a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://84daacc9-7e90-4c5d-b1ed-526950900c49.filesusr.com/ugd/73f3b0_0cf48df45df345e188a8e0d41348ae28.pdf?index=true
    • https://s3.amazonaws.com/dojonuta/malus_law_experiment_viva_questions_and_answers.pdf
    • http://sijaxulo.rf.gd/badminton_team_tournament_format.pdf
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_a2df9922c40745ceb5d7dd147041890b.pdf?index=true
    • http://fitoripuxixanax.epizy.com/fisher_price_snuggle_monkey_swing_manual.pdf
    • https://cd65756b-a9c7-4cca-9498-1747a6459195.filesusr.com/ugd/05eb20_4dd2ad36e5374c6783e986037f2a5065.pdf?index=true
    • https://s3.amazonaws.com/pazatuv/51182982880.pdf
    • http://solapivomakegel.rf.gd/75627010636.pdf
    • https://6b54b0b2-91db-43cc-88c8-bbc4f7e20b37.filesusr.com/ugd/a773aa_92bcc39cd5004391962d0c2cd83cffbd.pdf?index=true
    • https://9b08d158-0e0f-4203-9b31-e1272d977b1c.filesusr.com/ugd/086daf_6d1e54d336564210a4784d54e2af3938.pdf?index=true
    • https://s3.amazonaws.com/tiduro/wajeluminupuzel.pdf
    • https://s3.amazonaws.com/vonusirukete/plural_form_of_asparagus.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed5e.bin
e90e6743352eabf00b3d6e00eabfefb050ff0ca740c497af63a6438c79d39c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED5E 5252 bytes
font_01_sfnt_off0000ff51.bin
1a37d53cc4a914210e6615fccbdd4eb956219faceb24271fbbb2f7a8e311b1ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF51 11560 bytes
font_02_sfnt_off000126bb.bin
2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126BB 16092 bytes

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