Malicious PDF — malware analysis report

Static analysis result for SHA-256 9496618f6c5da90f…

MALICIOUS

PDF

74.8 KB Created: 2021-03-14 14:49:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a646efedaa16faa9e2e21a33c71f6fa2 SHA-1: de1167c5d169bd236c89ade1a3fd9ed6e78777c2 SHA-256: 9496618f6c5da90fcea791d729990b8c2837ea283902cff82dce28c3d05f79bf
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'lozipotod.ru', which is likely a malicious domain used to host a phishing page or distribute further malware. The document body, though heavily obfuscated, suggests a lure related to educational content, aligning with common phishing tactics.

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://lozipotod.ru/wix?keyword=graph+transformations+worksheet
    • http://ig-mediateam.net/why_is_nuclear_physics_importantbq03z.pdf
    • http://polfact.site/rolenumatoledajajevitinzk7b.pdf
    • https://geguwuwivoloko.weebly.com/uploads/1/3/1/6/131636947/834912.pdf
    • http://shoop-fl.ru/59738494034z9szi.pdf
    • https://static.s123-cdn-static.com/uploads/4453579/normal_6002465ce2d25.pdf
    • http://forovasax.medianewsonline.com/microsoft_access_2016_requires_visual_basic_for_applications.pdf
    • http://dazolovegom.mygamesonline.org/rataragumiladarogiwegemix.pdf
    • https://cdn.sqhk.co/kifavubivelo/6gchijV/jafosowupuk.pdf
    • http://all-casino.xyz/berepazirujogesabuwujem8hg5q.pdf
    • https://cdn-cms.f-static.net/uploads/4418970/normal_602792efef27d.pdf
    • https://zorusijumabek.weebly.com/uploads/1/3/4/8/134851431/6081607.pdf
    • https://cdn.sqhk.co/ridijafugemi/gi7jdii/49461260218.pdf
    • https://cdn.sqhk.co/fowoleleda/hEheWPr/dope_wallpapers_for_mobile_hd.pdf
    • https://cdn.sqhk.co/nejajevafode/jgdLPj6/junior_hockey_teams_in_canada.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5dd7d9a6-6c65-4fa0-96db-fb5223450719/business_ethics_concepts_and_cases_7th_edition_ebook.pdf
    • https://uploads.strikinglycdn.com/files/4907790b-d0fd-40e9-a46c-4240e697e3be/larilepedum.pdf
    • https://uploads.strikinglycdn.com/files/6c5a8131-e393-403b-9ab9-5f3115894eb1/gusimosejo.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_off0000e4fd.bin
cdcb8d4d842caafe61f38552891d1c19c0db749c3ca3915770c8fb8d3a28156f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FD 5296 bytes
font_01_sfnt_off0000f6ea.bin
35fb75bc98d4009a16c0386f293092d60985e08d80e2a656c985eedc9e418450
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EA 10904 bytes