Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00f1149859236d9…

MALICIOUS

PDF

79.7 KB Created: 2021-04-07 15:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9ae6a83440642e540ad5c91dce3f9e0 SHA-1: 2a5ceed7aa242136780725996d1812e3981c67b1 SHA-256: b00f1149859236d909b7d441489d404858b2932fe769422d4e44ef48368b0f3d
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely used for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to 'tennis games', aiming to trick users into visiting the malicious URL.

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://mezovuduw.ru/wix?keyword=head+tennis+garrison+games
    • https://static.s123-cdn-static.com/uploads/4482399/normal_5fcc216e90be0.pdf
    • https://static.s123-cdn-static.com/uploads/4405638/normal_5fcb4142df91b.pdf
    • https://cdn-cms.f-static.net/uploads/4426090/normal_60697640c97dd.pdf
    • http://laulu-go.ru/25473233453u7wa8.pdf
    • http://vojutivuzijan.22web.org/mofozonewejeze.pdf
    • http://reduslim-eu.site/89273088223qag3x.pdf
    • http://instapresent.site/tissot_1853_pr_100_10_bar9sjnk.pdf
    • https://static.s123-cdn-static.com/uploads/4373517/normal_5fc69c7ae595e.pdf
    • https://cdn-cms.f-static.net/uploads/4470228/normal_605c5394b0a33.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nefunupu/podebaroxotiwixaxapopejaz.pdf
    • https://s3.amazonaws.com/vigevot/how_to_start_weight_training_at_home.pdf
    • https://s3.amazonaws.com/rawesaragegugar/lenaropi.pdf
    • http://dololesorut.epizy.com/active_directory_tools_free.pdf
    • https://s3.amazonaws.com/tojazudibumogab/saliwizudilarokanovusa.pdf
    • https://s3.amazonaws.com/pusixa/cambridge_igcse_mathematics_book.pdf
    • https://s3.amazonaws.com/zarevizebi/sansa_clip_plus_firmware_update.pdf
    • https://s3.amazonaws.com/jigezilor/the_college_panda_calculator_program.pdf
    • http://nizalag.rf.gd/13183067519.pdf
    • http://kitomalisufed.epizy.com/how_to_use_trim_command_in_autocad.pdf
    • https://s3.amazonaws.com/kefefetafij/rules_and_conventions_for_written_english_punctuation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f16d.bin
3b6c3edccbbdf68622c80e44ac099bd4bffa00507f4f1bc839f0bdbf087aa810
pdf-font-stream PDF embedded font (sfnt) at offset 0xF16D 3080 bytes
font_01_sfnt_off0000fc77.bin
805ca2a5296e1718778ce951eda86161d4758dbeb8fd7ea71a88a6b02bceec75
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC77 5076 bytes
font_02_sfnt_off00010d9e.bin
2bbea788654b20e9d7b0f84890669162cfaeefabf4bfeaad8e9308427e5710ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9E 10368 bytes