Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d6ff11980e43f0…

MALICIOUS

PDF

90.4 KB Created: 2021-03-30 15:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dcd8112570e8d38a4d43bfcb92032441 SHA-1: 959bfdf7d3c0be7b6c8e322b455d84aa4254d494 SHA-256: 30d6ff11980e43f0570350117582ee737c1e21360171a417249b585978d070d0
126 Risk Score

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, with the primary suspicious URL being https://maypoin.ru/wix?keyword=jamman+xt+looper+manual, suggesting a redirection to a malicious site. The PDF structure itself appears to be a link farm, designed to host a large number of links to potentially malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=jamman+xt+looper+manual
    • https://cdn.sqhk.co/pizokifuxe/jeigExF/95816940732.pdf
    • http://cardioactiveitalia.site/ranazululotajurokuxu6un4e.pdf
    • https://cdn-cms.f-static.net/uploads/4486206/normal_600a60428dce2.pdf
    • https://cdn-cms.f-static.net/uploads/4389358/normal_600f7e45056c5.pdf
    • https://cdn.sqhk.co/sizafutito/Fgegjb0/dikagun.pdf
    • http://goodnaturak.space/569352357633e79c.pdf
    • https://cdn.sqhk.co/rilabotib/hfVhehf/96291025603.pdf
    • https://cdn-cms.f-static.net/uploads/4478952/normal_6047d86db1153.pdf
    • http://lnstagramcopyrightcenter.com/gidha_boliyan_videoza16g.pdf
    • https://static.s123-cdn-static.com/uploads/4491686/normal_5ff57d91729bf.pdf
    • https://cdn.sqhk.co/dopebuxoz/ihgdibG/zamilolodibivisonefegurer.pdf
    • https://cdn.sqhk.co/sovanoniwuva/gifv0gh/8_ball_pool_offline_game_for_pc.pdf
    • http://telemprom.xyz/supposed_former_infatuation_junkie_itunes8vvi0.pdf
    • http://maroron.22web.org/boardman_weather_report.pdf
    • https://cdn-cms.f-static.net/uploads/4446494/normal_6023ae14a4826.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zekebevijizin.rf.gd/marcapasos_tipos.pdf
    • https://uploads.strikinglycdn.com/files/97d6e35c-b85b-4280-ac89-13496ca8132a/20559264592.pdf
    • https://uploads.strikinglycdn.com/files/39c552b2-5ae8-4000-99ca-127bdebad25d/timopav.pdf
    • https://s3.amazonaws.com/wenobagupexekap/56003567707.pdf
    • https://uploads.strikinglycdn.com/files/645c7453-4aa7-4d04-84ef-df694e09c05d/majitedubesara.pdf
    • https://s3.amazonaws.com/didowugorokirug/29303271472.pdf
    • https://s3.amazonaws.com/davawina/26842144924.pdf
    • https://uploads.strikinglycdn.com/files/3ecab24b-ec46-42a5-ba03-e478626527b9/resumen_del_libro_de_romeo_y_julieta_en_ingles.pdf
    • http://lujubozugib.epizy.com/android_studio_hide_navigation_bar_xml.pdf
    • http://todosix.epizy.com/dragon_ball_game_apk_pure.pdf
    • http://pifimopumo.rf.gd/jifesalup.pdf
    • https://s3.amazonaws.com/dorobukasawituw/schma_anatomie_du_coeur.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_off000115a8.bin
dae8a08df7351de34bac724179bba2fd9e077b37f560c242f6606bb567a4450d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115A8 4680 bytes
font_01_sfnt_off00012574.bin
fad696a43037b4c3f7de308028880f112714858ff04e3ae946af612f9aba4c8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12574 11524 bytes
font_02_sfnt_off00014c09.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C09 4324 bytes

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