Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d20734e47ff869…

MALICIOUS

PDF

76.6 KB Created: 2021-02-27 17:49:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea486da2db33c0f0f9bfe8cc2a05494c SHA-1: e1d58d76481a0ada79d73df31e9b874aac7bdfc7 SHA-256: a5d20734e47ff86979c47a43187e35b0c794c292290f88d0bb0d7700a243526a
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document body references 'Fortnite mod apk unlimited v bucks', suggesting a lure for potentially unwanted or malicious software. An external URI pointing to 'https://seumenha.ru/wix?keyword=fortnite+mod+apk+unlimited+v+bucks' was extracted, likely serving as the download source for the lured 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://seumenha.ru/wix?keyword=fortnite+mod+apk+unlimited+v+bucks
    • https://cdn.sqhk.co/duwewofowus/dhevgde/friend_finder_networks_data_breach.pdf
    • https://cdn-cms.f-static.net/uploads/4421329/normal_6036deeba573a.pdf
    • http://bioforcecolumbia.site/high_density_foam_sheets_home_depot1p3z1.pdf
    • https://cdn-cms.f-static.net/uploads/4475380/normal_603747127f23c.pdf
    • http://sweetygirl.club/inc_and_grow_rich_reviewvlry7.pdf
    • http://alcexpress1.xyz/what_was_the_effect_of_japan_invading_manchuriabvoob.pdf
    • https://cdn-cms.f-static.net/uploads/4490244/normal_60111ce69194c.pdf
    • https://static.s123-cdn-static.com/uploads/4490273/normal_5fe316cc925b7.pdf
    • https://cdn-cms.f-static.net/uploads/4501042/normal_6032f9a7eaf67.pdf
    • https://cdn-cms.f-static.net/uploads/4423428/normal_6025d0b92a7bc.pdf
    • https://static.s123-cdn-static.com/uploads/4488322/normal_5ff40e6ba17a0.pdf
    • https://cdn.sqhk.co/jivumigen/ihjivrl/1335487671.pdf
    • https://cdn-cms.f-static.net/uploads/4366354/normal_6012fa44221aa.pdf
    • https://cdn.sqhk.co/pijovowifil/KtlyXhh/angle_meter_pro_free.pdf
    • https://static.s123-cdn-static.com/uploads/4377663/normal_60075853626fa.pdf
    • https://cdn-cms.f-static.net/uploads/4474448/normal_60176ae4a2475.pdf
    • https://static.s123-cdn-static.com/uploads/4459623/normal_60025b51e204c.pdf
    • http://lnstagramverifiedbadge-form.com/kitetjfcx3.pdf
    • http://zabavnyi-slon.ru/what_is_the_theme_of_a_poem_meanz3gqb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nuzowudip.rf.gd/foundations_of_chemistry_classifying_matter_answer_key.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_off0000efad.bin
8100a049c3c2dac5f15143d796de6f99df1bf3e674516ef9a13cc420ed4e0f94
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAD 5436 bytes
font_01_sfnt_off00010216.bin
d2fd51449a2ae7dcd436c00fc25cfd756320085ac5549ac28d516d20d4d6cfbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x10216 10184 bytes