Malicious PDF — malware analysis report

Static analysis result for SHA-256 e92f2aff6d1ac899…

MALICIOUS

PDF

81.6 KB Created: 2021-03-10 10:17:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: faa469a24fd0f033e0662be221e37389 SHA-1: 77665bb97a4b07926976376cd3112978b37a0ffb SHA-256: e92f2aff6d1ac89958ac27da79e5c3547c3957ce7b9c86f43a66f8831906a95b
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites for credential harvesting or malware delivery. The document body, though heavily obfuscated, contains keywords related to games, which is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/aws?utm_term=sword+fight+game+roblox+uncopylocked PDF link annotation
    • http://rimka.xyz/bohemian_rhapsody_sheet_music_easy0ba3a.pdfIn PDF document text
    • https://cdn.sqhk.co/kamugututu/jiifgg7/70393105064.pdfIn PDF document text
    • http://baltika-trans.ru/73176063484xzd0q.pdfIn PDF document text
    • http://hisgohar.site/desert_storm_cards_price_guidenvnal.pdfIn PDF document text
    • https://cdn.sqhk.co/renosopezare/fLghjdo/67838820688.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/jU8jjmt/landscape_coloring_book_color_by_number_mod_apk.pdfIn PDF document text
    • http://punubukotulanes.22web.org/58397511180.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/AVhwidS/used_loop_pedal_guitar_center.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavofuduwaxene.epizy.com/94146611266.pdfIn PDF document text
    • https://be934b08-0dcc-4e2e-8de1-c3c1c32dbfab.filesusr.com/ugd/d5415a_178be6c67df0496cbae9962ae51b787c.pdf?index=trueIn PDF document text
    • http://duwazobikojuk.epizy.com/gitedixokis.pdfIn PDF document text
    • https://835a0401-7144-467e-aacc-710587930ffc.filesusr.com/ugd/432cba_ac12cd9e31ba4ec499343e59ee7fa79f.pdf?index=trueIn PDF document text
    • https://a3720f92-bdaa-4449-a3ff-14f36884d2d5.filesusr.com/ugd/afadc3_e205845dec7e4885b96620053c2c8d6e.pdf?index=trueIn PDF document text
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_4f7b38e6320f4f12828e08c12ecc999f.pdf?index=trueIn PDF document text
    • http://nosifunugiwes.epizy.com/vsphere_vcenter_6._5_free.pdfIn PDF document text
    • https://99516632-72ce-40f3-a9a1-a01c91361c65.filesusr.com/ugd/e42c35_4436295c09324ae68d12b9b8955a8ad2.pdf?index=trueIn PDF document text
    • https://05efeaee-ea5b-4dc8-bddc-a5098cc0dcbd.filesusr.com/ugd/c06c30_8fec829ff754465ba55b21e14b902de7.pdf?index=trueIn PDF document text
    • http://gukasitaxe.epizy.com/10297222329.pdfIn PDF document text
    • https://237a2310-9536-43ad-add1-fe73b840a51a.filesusr.com/ugd/8b319d_bc65569f1c9c4f67b4fc19573e1a8584.pdf?index=trueIn PDF document text
    • http://wizidiz.epizy.com/what_is_the_lesson_of_the_poem_the_road_not_taken.pdfIn PDF document text
    • https://297de083-771a-4730-a3b8-a2afe8c7d209.filesusr.com/ugd/47424f_0de6f54769594a75b151e1167afa6666.pdf?index=trueIn PDF document text
    • http://fijosat.epizy.com/jitakiputorinemimas.pdfIn PDF document text
    • http://xogonat.epizy.com/minecraft_full_version_free_pc_offline.pdfIn PDF document text
    • http://zobovobewuw.epizy.com/diablo_3_gem_farming_guide.pdfIn PDF document text
    • http://nukamepewavux.epizy.com/budibodefumigetulusu.pdfIn PDF document text
    • https://160e4e15-e27a-4ef2-9b26-f67fc0969a86.filesusr.com/ugd/cbdbb6_bf4468ac5aa84f2ebd06dd1c9d57d5dd.pdf?index=trueIn PDF document text
    • https://1c019786-7048-4615-837a-ae53f087c4ae.filesusr.com/ugd/8b4172_9a301e83d9414254a7d93ef6c74b5d83.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE1C 5960 bytes
SHA-256: 6905fac2e692a533c8c7c50ac2bb9993337c187369a28a2a1e81bd495761de05
font_01_sfnt_off00011257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11257 11112 bytes
SHA-256: d6f32ef878b861c6061d248155b7232ed29ca8ea076c951e42b5d0a5cdeb7e82

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