Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d0702f5d960be4…

MALICIOUS

PDF

78.7 KB Created: 2021-04-12 14:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a47446f6388061c2146fbde3c184e2d7 SHA-1: e691b958f28370b51b3e919b52c25420fa474d15 SHA-256: b2d0702f5d960be42443d69fb85d38e3575b7a8d30b76647167648b789b2278f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to 'connecting arabic letters practice pdf'. The presence of external URIs indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

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://xezojetit.ru/strik?utm_term=connecting+arabic+letters+practice+pdf
    • http://mobutadaxez.medianewsonline.com/laboratory_experiments_in_microbiology_10th_edition.pdf
    • https://cdn.sqhk.co/livulopo/iijwgfB/god_of_war_lost_toys_sell.pdf
    • http://lofajemami.sportsontheweb.net/the_cask_of_amontillado_plot_diagram.pdf
    • http://difanitukovu.mywebcommunity.org/nurewuke.pdf
    • https://cdn.sqhk.co/zaliroded/PijjaeQ/64142964139.pdf
    • http://minesaxofunawi.getenjoyment.net/82469042967.pdf
    • https://cdn.sqhk.co/xusovatovu/ELhbpjf/diablo_immortal_release.pdf
    • https://cdn.sqhk.co/kimefutif/ykDcgfb/league_of_gentlemen_bingo_caller_script.pdf
    • https://cdn.sqhk.co/kuwusemob/kijchgo/visolonos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2fc8704e-5333-48b9-a80d-bb3f2626699c/how_to_pair_plantronics_plt_bluetooth_headphones.pdf
    • http://nenexotaz.rf.gd/8594001866.pdf
    • http://xupiwepe.epizy.com/1434938709.pdf
    • https://uploads.strikinglycdn.com/files/e2faa5d0-d676-444c-b276-9500605493fe/nicholas_sparks_books_in_order_printable.pdf
    • https://uploads.strikinglycdn.com/files/55b5aefa-7c48-489d-9aab-7beebaa1463b/32010931700.pdf
    • https://uploads.strikinglycdn.com/files/d9e2e9b5-7c52-4b58-b3cd-26ddcb392795/djms_procedures_training_guide_part_3_chapter_5.pdf
    • https://uploads.strikinglycdn.com/files/bc22a95c-2408-4713-a8b2-61e2e8c9f6f9/dekedalobobogujarunakopol.pdf
    • https://uploads.strikinglycdn.com/files/79fdbbf9-112c-4748-b120-6e700ee81790/5519346079.pdf
    • http://vejikavufabaj.epizy.com/mutemu.pdf
    • https://uploads.strikinglycdn.com/files/35e16e2a-747b-40d5-a1fa-c32325cca95f/98167793509.pdf
    • https://uploads.strikinglycdn.com/files/3c1242bb-e5e2-446a-8371-d3ec09c12730/juegos_de_cine_cartoon_network.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_off0000e0f0.bin
0e0f29238225b0de3dc51c20e25baceb4c885fcef7717dda943dd7fbe37ab098		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F0 5368 bytes
font_01_sfnt_off0000f339.bin
a5ff598c976b6f47131f0f87093d2c5d56ab459caf6433e3eafa0746f849cbeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF339 10700 bytes
font_02_sfnt_off000117eb.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117EB 16204 bytes

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