Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4205304ec8f8e8…

MALICIOUS

PDF

80.6 KB Created: 2021-03-06 16:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 577e02d9ce4b28bc4f9f246f294c5a25 SHA-1: 2d4f37ad5524dbb0d273c1109ddbabd9c11abc42 SHA-256: 7f4205304ec8f8e84a1309543edc44bb7c0f5bb247204756adb497aff6d40543
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 pointing to 'soxebez.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, appears to reference financial calculations, suggesting a lure to trick users into visiting the malicious URL.

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://soxebez.ru/123?utm_term=how+to+calculate+incremental+irr+on+ba+ii+plus
    • https://cdn-cms.f-static.net/uploads/4489852/normal_603ee6a4c731f.pdf
    • http://wivaserana.mywebcommunity.org/51940087142.pdf
    • https://cdn.sqhk.co/rujuwawuju/0oMugfM/local_masjid_quran_prayer_times_salati.pdf
    • https://cdn.sqhk.co/lafuwexale/aRoGjeS/newodudabiwigoduki.pdf
    • https://cdn-cms.f-static.net/uploads/4443598/normal_603557f2830fe.pdf
    • https://cdn-cms.f-static.net/uploads/4424010/normal_600ef68a41308.pdf
    • https://cdn-cms.f-static.net/uploads/4410702/normal_600f55e739190.pdf
    • http://wivaserana.mywebcommunity.org/taloludakavexedopabaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/ec0ea6a8-9d40-4c72-b429-eca9f3d47434/rukumejadoredulu.pdf
    • http://fevovamebabeji.rf.gd/80728727772.pdf
    • https://uploads.strikinglycdn.com/files/f0aafa6b-8094-4579-9918-3b4f0979e0e5/ludivomaxuj.pdf
    • https://4095172d-bd2f-4181-91d7-dd424e653400.filesusr.com/ugd/df73ab_fb1f25d591d44f8abb9deaae34765f07.pdf?index=true
    • http://xasoxutek.epizy.com/sports_tv_guide_ireland.pdf
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_b5a68019d0584b19a449e0b0b01aff70.pdf?index=true
    • http://besuwodusibix.rf.gd/lagu_awan_axello_terbaru_2019.pdf
    • https://7e005a1c-fb68-43c1-af83-b854b6a2d282.filesusr.com/ugd/dcfb95_b45e24f32d554f17890fba0b904c062a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/70f71306-8f2e-49f0-8c94-a0e516d98a80/the_walking_dead_comic_issue_117.pdf
    • http://lobivovakebala.epizy.com/34107822752.pdf
    • https://uploads.strikinglycdn.com/files/c8f9213f-bbd4-4298-bbb3-abb488e5781f/69256428237.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_off0000f011.bin
c7c864d471edb7c61a3682dc305c2f28931820dc642984e841e20fb772ff19b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF011 5156 bytes
font_01_sfnt_off0001017d.bin
1d94b85eac7dcd1a49b5946b0a738e35da2037c6e9df5b98aa36f3a7626548a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1017D 10904 bytes
font_02_sfnt_off000126cd.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126CD 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.