Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8c0501c2be2b532…

MALICIOUS

PDF

80.2 KB Created: 2021-03-15 20:49:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a966f1e65716859f28e657f13bdc90e SHA-1: 60a860625772a4defb96faf16e28a27c7ab76867 SHA-256: d8c0501c2be2b532d98ed0963d33bcdbe30d09cc78b7f9e36494db93fb85be7f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URI pointing to 'zajinet.ru', which is likely used to redirect the user to a malicious site. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the PDF is designed to exploit vulnerabilities or trick the user into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/wix?keyword=my+time+at+portia+money+glitch+2020
    • https://cdn.sqhk.co/losomilodip/ia6gX09/ice_age_village_hack_mod_apk_download.pdf
    • https://cdn-cms.f-static.net/uploads/4491398/normal_600b6df779f13.pdf
    • http://evilcheats.fun/power_jack_8000_watt_inverter_manualppapr.pdf
    • http://sollabs.xyz/205895596637wyt4.pdf
    • https://cdn-cms.f-static.net/uploads/4417809/normal_5fda6ac460def.pdf
    • https://cdn.sqhk.co/zekuxemelop/gf6hffp/81580459531.pdf
    • http://yewes.fun/2001_yamaha_kodiak_400_4x4_tire_size0r8kb.pdf
    • http://mgacessoria.online/functional_movement_screen_exercise_selection410ew.pdf
    • http://itgermany.net/wiruputonurak5w8m.pdf
    • http://affilateapp.online/financial_times_newspaper_price_ukzishs.pdf
    • http://getfreecreditreport.info/wumomigejiku4rxep.pdf
    • http://vkrowl.com/22743275724gdqgv.pdf
    • http://ottics.ru/bopuletesodimavil6pako.pdf
    • http://kapusta.pro/6459339236313njq.pdf
    • http://hallop.xyz/wd_my_cloud_home_8tb_personal_cloudxd0ks.pdf
    • https://cdn.sqhk.co/nivatasob/bHQjbji/79727296692.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://44eeb0f0-4dc9-4d8b-b3fd-cc7ace98e90e.filesusr.com/ugd/a083a1_0bb53d644f324b7f98230d178e05e7ca.pdf?index=true
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_9a58746607e94a5b99b4354df299c85c.pdf?index=true
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_e85ea3984be245399c4e6588b0b4e3aa.pdf?index=true
    • https://57933e30-1e86-4cbe-ad2b-777cb72f9932.filesusr.com/ugd/235f1a_cb85b5970953481da357f0d28adfca6e.pdf?index=true
    • 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_off0000fa01.bin
e13b31d07a46e44ed56aeb733806160417e545b6ad38400aa756eff82601d5b0
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA01 5548 bytes
font_01_sfnt_off00010cc8.bin
f4c30c04ceb7b82ad1d1dc0883684ff161197c8d8c22e679921ebfbb416925bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC8 10728 bytes