Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0fd1127c9dcbcf…

MALICIOUS

PDF

77.1 KB Created: 2021-03-23 03:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ca6ef9b8ff3051389e8bc50d4efd141 SHA-1: 1c081f3f9d4ec818078e6b201218950dc7ceae82 SHA-256: be0fd1127c9dcbcf622213093ee881191522d7eebfcbff88f9085c8b09990f5c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, one of which is directly referenced in the heuristic findings, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, appears to be a lure related to a 'dmv permit study guide'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=sc+dmv+permit+study+guide
    • http://naturebiolog.fun/62473018981fb2hv.pdf
    • https://cdn.sqhk.co/kululojilo/jaIngge/motogp_dates_2019_phillip_island.pdf
    • https://cdn.sqhk.co/xukonobos/jhp6xcb/black_plus_size_formal_party_dresses.pdf
    • http://info-pages.ru/xazigisojipejeredelobewilb80x.pdf
    • http://bezprovodov.guru/number_line_integers_worksheet89fm0.pdf
    • https://cdn.sqhk.co/kuwusemob/jathiji/tigesavezodavawazezodoju.pdf
    • https://cdn.sqhk.co/gaxokakijefe/haicN2E/58310956364.pdf
    • http://dududuw.mypressonline.com/jumiresufujobobugeli.pdf
    • http://zibodotuf.mygamesonline.org/26483004208.pdf
    • https://cdn.sqhk.co/kobewudojuvo/jjOgjgc/37076166990.pdf
    • https://cdn.sqhk.co/fukonovum/dLggjep/home_design_3d_app_roof.pdf
    • http://vitodibiwanezej.mypressonline.com/askep_pada_anak_dengan_bronkopneumonia.pdf
    • https://cdn.sqhk.co/gogojiranat/NAIZhh4/82620195601.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_f0820ab7cfb941c2af4718561bff5c32.pdf?index=true
    • https://63a0a607-6d1b-4b95-a813-f1b07cabc719.filesusr.com/ugd/ad56f2_077634dfc274434eafa05c01e3211894.pdf?index=true
    • http://bavotuvezomevi.myartsonline.com/zuwivuwo.pdf
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_037d18162fa94115ba2356de88896c23.pdf?index=true
    • https://s3.amazonaws.com/levovod/3d_printing_and_additive_manufacturing.pdf
    • https://9e269ae7-c3cf-4b9f-bde2-1d9be064b7bf.filesusr.com/ugd/139869_073d29d41df848968a1e5ef20e2696e8.pdf?index=true
    • https://s3.amazonaws.com/tazibabebamep/55873308337.pdf
    • https://s3.amazonaws.com/matogapibelifiv/27125714939.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_off0000ef2b.bin
0aea8f530af74d8423390f9e64c8df403e20f66d4dced6b9b2aeff786f7662f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2B 5416 bytes
font_01_sfnt_off00010194.bin
5e8c8d635905f92b08fb46b057a860cc3eb017e66a2c70f793840ef56125a62a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10194 10860 bytes