Malicious PDF — malware analysis report

Static analysis result for SHA-256 180480ae102ca697…

MALICIOUS

PDF

75.9 KB Created: 2021-03-18 09:06:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c45831371e8769e88284a5d20f47ab3 SHA-1: 1b2507377009ec3ec77facfb346324c401e1062f SHA-256: 180480ae102ca697854cb5dab4714f445ecc3b978a43e48c4e74e3ddb4f2d210
136 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristic firings indicating malicious intent, specifically a phishing lure related to earbuds. The presence of the 'SE_LOLBIN_RUN_COMMAND' heuristic suggests the document may attempt to execute commands, potentially via JavaScript, to download and execute a second-stage payload from one of the listed URLs. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://vilenefex.ru/wix?keyword=otium+true+wireless+earbuds+manual
    • https://cdn-cms.f-static.net/uploads/4371266/normal_60494d380de4f.pdf
    • http://bupatinewesep.66ghz.com/does_weed_kill_brain_cells_yahoo_answers.pdf
    • https://cdn-cms.f-static.net/uploads/4467019/normal_60257684d145e.pdf
    • https://wowaximemufa.weebly.com/uploads/1/3/1/4/131453960/pezafoz-gorine-bagugagisir.pdf
    • https://xevezuwojuko.weebly.com/uploads/1/3/0/7/130740392/daxuz.pdf
    • http://xexogafuko.22web.org/rockler_cribbage_board_templates.pdf
    • http://zufonedisogaj.iblogger.org/engineering_mechanics_statics_14th_edition_by_hibbeler.pdf
    • https://wumaviki.weebly.com/uploads/1/3/0/8/130874148/2168172.pdf
    • https://xojefuwi.weebly.com/uploads/1/3/4/6/134630926/wegireranega.pdf
    • https://patapirebitogi.weebly.com/uploads/1/3/0/8/130814085/zadimugofobewawu.pdf
    • https://savatevadenu.weebly.com/uploads/1/3/1/4/131452836/wifafefijotimiropa.pdf
    • https://gafapelisepofas.weebly.com/uploads/1/3/4/7/134762307/xovodim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://venijulezazowo.rf.gd/wabinamaluxerira.pdf
    • http://muvelexadaw.epizy.com/29682191303.pdf
    • https://uploads.strikinglycdn.com/files/92cd8a94-795a-4252-add7-f03fd3af38fd/45967011057.pdf
    • http://kisomelug.rf.gd/microsoft_exchange_server_2016_powershell_cookbook_download.pdf
    • http://verepipu.epizy.com/99554228209.pdf
    • https://uploads.strikinglycdn.com/files/7a7cce0b-52ea-4da7-9cb7-67a6be052cd2/1455451394.pdf
    • http://rumavajusugeg.rf.gd/atinga_nigerian_movie_free.pdf
    • https://uploads.strikinglycdn.com/files/859a3eed-d87e-4393-a238-6a80dd270d44/bmw_navigator_7_release_date.pdf
    • http://xebopeveralox.epizy.com/fasumun.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://verepipu.epizy.com/9
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df6d.bin
d8b907802410e675ceca2784509e58a9dae2947c1b2ad43e3e0c02687eabed47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6D 2952 bytes
font_01_sfnt_off0000e9fb.bin
abb31a3d7fd4ad530ba2754bfd4e709fdba7ed26dcfb47260d671ef9dc9f7533		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FB 5232 bytes
font_02_sfnt_off0000fbb5.bin
f7f3f6fa4db4510803932d913a02190a014dc8654313d20410302c36b5262376		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB5 11260 bytes

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