Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c30592c2c3a92d5…

MALICIOUS

PDF

81.0 KB Created: 2021-04-03 08:34:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cc23aeafedbb80da867ec0da43a87a5 SHA-1: d6fbe65c72dd33eefb9ecfe0fac9d8ba6e9ce7c1 SHA-256: 9c30592c2c3a92d513220b3d2fa6d86a21861a689d2aef186c60994954e5e5cf
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=bhagavatam+canto+1+pdf
    • http://guitar.su/414231568655hcks.pdf
    • http://redirunna.xyz/high-_level_panel_on_digital_cooperation_reportks2oz.pdf
    • http://secureappeal.com/libro_ejercicios_gramatica_espaolak79i8.pdf
    • http://scoretdho.best/gesisivefubamixewefjs7cw.pdf
    • http://xelipev.22web.org/64810531074.pdf
    • http://kopalomara.iblogger.org/hopdoddy_san_marcos_tx_menu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zatazewoz/commercial_real_estate_powerpoint_templates.pdf
    • https://s3.amazonaws.com/doxifuba/mudimodabadetegokoliranis.pdf
    • https://uploads.strikinglycdn.com/files/b7d4fd7a-c1e7-4690-8a7c-acdb10ca4a3a/33070812747.pdf
    • https://uploads.strikinglycdn.com/files/396140b4-a633-43e4-8132-973017840af7/2000_jeep_grand_cherokee_transmission_shifting_problems.pdf
    • https://uploads.strikinglycdn.com/files/2e8c7f6c-c410-40d0-b161-099b75373c30/the_things_they_carried_sparknotes_chapter_10.pdf
    • https://s3.amazonaws.com/bamepofewalada/65772853333.pdf
    • https://uploads.strikinglycdn.com/files/f06e2387-df6c-421a-94aa-50e9dd16763b/82767153622.pdf
    • https://s3.amazonaws.com/jevopemosod/loxinu.pdf
    • https://uploads.strikinglycdn.com/files/7d4812ff-bde6-4b9b-bdfb-df1cbea9a345/seidels_guide_to_physical_examination_8th_edition_ebook.pdf
    • https://s3.amazonaws.com/vovuzize/88148679929.pdf
    • https://s3.amazonaws.com/zebarufuridorur/sefetebakalelibetu.pdf
    • https://uploads.strikinglycdn.com/files/dff0fe0e-abda-4e84-a43f-53827caf7da7/gibuwimamugifujuxeli.pdf
    • https://s3.amazonaws.com/ninazarila/bhaagamathie_tamil_movie_in_isaimini.pdf
    • https://uploads.strikinglycdn.com/files/704194b4-8253-4d52-884a-32c1b212ffde/99206722574.pdf
    • https://uploads.strikinglycdn.com/files/031fc6ba-bb69-4ef6-a28b-7e8cfc6d163a/pavoxumoforiw.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe37.bin
34957bcd4206257a3a2c59c28370fb842df1eb11c4bc1a330435f7ee8ec97b54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE37 5424 bytes
font_01_sfnt_off000110a5.bin
ccb78723259206f25d6d3c38900b97a51093f1dfb2b2f802940926d763f4aa43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110A5 10964 bytes

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