Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5101e7e68a1bac…

MALICIOUS

PDF

77.1 KB Created: 2021-03-20 08:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9ac002805095b67d91588f824ea04a2 SHA-1: b2e0ef410209fa4bb70308d155853b92a6739b2f SHA-256: 2c5101e7e68a1bac94f60aa529cbcc54cb789d0cb7d78ffad1eeaa2f4e45d1c0
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a resource that is likely part of the attack chain. The document body, though heavily obfuscated, suggests a lure related to a 'leveling guide', indicating a social engineering attempt to trick the user into downloading further malicious content.

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://botokaw.ru/123?utm_term=joana%2527+s+leveling+guide+alliance+free+pdf
    • https://static.s123-cdn-static.com/uploads/4407986/normal_5fff746c8d83c.pdf
    • https://cdn-cms.f-static.net/uploads/4485799/normal_60559496835d3.pdf
    • https://cdn-cms.f-static.net/uploads/4417037/normal_5fe673aee7d72.pdf
    • https://cdn.sqhk.co/wafavalufa/heiiLgi/sarugofuzijapofetete.pdf
    • https://cdn.sqhk.co/vedimofaw/geEyZid/guvem.pdf
    • http://dixurujisefumet.22web.org/73368975647.pdf
    • http://zuragaretezi.iblogger.org/jufer.pdf
    • http://banquepopulaire-fr.org/8675788393g4syq.pdf
    • http://azakalaza5.xyz/hepatitis_a_2019j1ooj.pdf
    • https://cdn-cms.f-static.net/uploads/4481402/normal_602503acd2fa2.pdf
    • https://static.s123-cdn-static.com/uploads/4368506/normal_5ff799f9994cc.pdf
    • https://cdn.sqhk.co/xosaletozobi/eJJgcl4/pearson_realize_3rd_grade_math_answers.pdf
    • http://contact-git.top/in_the_developed_world_average_life_expectancyn8pjq.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gujalitez.epizy.com/dbt_therapy_for_borderline_personality.pdf
    • https://8ac5c8e1-9174-427d-95c2-90bebb9f105a.filesusr.com/ugd/44b221_cbc03a81df934fbc807fcd90b76f62fb.pdf?index=true
    • https://fb075467-9d00-46c6-93ac-2b777f5e584b.filesusr.com/ugd/8bcd66_fbe5f54bd298453b9a16821cee5ea006.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a7fa704b-5f83-45a7-be88-84579d777174/mossberg_930_spx_short_stock.pdf
    • https://uploads.strikinglycdn.com/files/0cd2e3dc-d16b-4219-803a-888c67920af7/xirirolegivumetokunut.pdf
    • https://uploads.strikinglycdn.com/files/ca0c0442-869d-493a-93c8-382265f7d170/the_way_of_the_shaman_book_5.5.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_off0000ee2d.bin
e502702991c487e704070732357ae25cb4496418eca115f9594b0975c5eda8db
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2D 5404 bytes
font_01_sfnt_off000100b6.bin
53ccd9321a63f55f9a08323cdce4adf5698d291e6abb9e97c7504ba66e23cf8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x100B6 11244 bytes