Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2cd6ac54db7ed7…

MALICIOUS

PDF

80.1 KB Created: 2021-03-22 23:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e70bc081a725de203b8598e79d9fbd17 SHA-1: 16899250a683aca7167034fd3fd86f1232724f06 SHA-256: 6d2cd6ac54db7ed78abc69f03afde0269d67a018aaaba1bb24e7bc403f91a5ff
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'nipisod.ru', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to a movie title, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nipisod.ru/123?utm_term=antariksham+movie++in+telugu
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5fd635afbf211.pdf
    • https://cdn.sqhk.co/puxezuxivas/fgi1U5M/bosigaxezovuv.pdf
    • https://cdn.sqhk.co/zokirafuka/jgthfwq/rationalism_and_romanticism_in_architecture.pdf
    • https://cdn-cms.f-static.net/uploads/4382187/normal_6034c38a102f9.pdf
    • https://cdn.sqhk.co/ketusugedi/pjiigSR/modern_house_craft_mod_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4392237/normal_6024549c89b9b.pdf
    • https://cdn-cms.f-static.net/uploads/4366659/normal_600fee028dd32.pdf
    • https://cdn-cms.f-static.net/uploads/4413456/normal_601421ef966b8.pdf
    • https://cdn.sqhk.co/neganobasiwe/iTiaThb/new_buyers_guide_for_used_cars.pdf
    • http://peregukejipesa.iblogger.org/free_printable_math_worksheets_fractions_5th_grade.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vazavaxajude.rf.gd/construction_site_training_report.pdf
    • http://fegugeg.rf.gd/14688472990.pdf
    • https://uploads.strikinglycdn.com/files/1be6fd34-9454-4208-ab98-85c7b58c1722/5.1_right_triangle_trig_review_worksheet_answer_key.pdf
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_41ed6dd5540b4d1695649ef493f8f2de.pdf?index=true
    • https://uploads.strikinglycdn.com/files/84dde5ae-a8fc-4ffd-8671-1a9d5ca021f9/lezimolifesoxefezilififi.pdf
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_cd021a61064d4cadbacedac9ac6f597e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3af41d9d-c336-4805-818f-814eb97952dc/texogafofabolesix.pdf
    • https://uploads.strikinglycdn.com/files/a0076e59-fe0d-4bf1-8435-e3b0342d7148/how_to_use_focusrite_scarlett_2i2_with_garageband.pdf
    • http://worabomel.epizy.com/8517954253.pdf
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_0b8b367c9e0746c1b8a80c9cd66acf2d.pdf?index=true
    • https://s3.amazonaws.com/xabalaru/48088031338.pdf
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_65002541786f4a80929fb6d81fde61c5.pdf?index=true
    • https://s3.amazonaws.com/gonima/flyer_templates_psd_free.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_off0000e6ae.bin
a4c367b76dddf1d4a66d49d5bc10861dba1120c5aa0096a98e28d4cab80cb10f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AE 5212 bytes
font_01_sfnt_off0000f84a.bin
995b4dfb3858a473eec7ff36133d1ac141e524c43001cc1d9d2cb8f51cd0608d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF84A 10900 bytes
font_02_sfnt_off00011d9e.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9E 16164 bytes

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