Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee8a59a0304d669…

MALICIOUS

PDF

94.4 KB Created: 2021-03-07 00:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 9b791b907afff5c5267078d39aee41cf SHA-1: d841340568c535863744b201ed4a342f990a977f SHA-256: eee8a59a0304d669c5a0a30dcb387478b28fe4ffa3200e20106d287e24694d26
166 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a link farm and a remote support tool lure, suggesting a phishing or social engineering attack. The embedded URLs point to disposable hosting and are likely used to deliver a malicious payload or redirect to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://lozipotod.ru/strik?utm_term=ipod+nano+gen+6+for+sale PDF link annotation
    • http://zumufufup.sportsontheweb.net/wajozufafedoli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368225/normal_5fe50fa2c1ee7.pdfIn PDF document text
    • http://tobufupevujuma.mygamesonline.org/11454017474.pdfIn PDF document text
    • http://fikosarodone.medianewsonline.com/75534923130.pdfIn PDF document text
    • http://fakts.design/44175483644hgiio.pdfIn PDF document text
    • http://espaceabonnes.com/ilustraciones_cristianas_cortas_para_predicarfk1pb.pdfIn PDF document text
    • http://lefibipefazefep.mypressonline.com/what_are_the_music_stations_on_directv.pdfIn PDF document text
    • http://islandlandscapesbb.com/sherlock_holmes_books_in_tamilswzh1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392656/normal_6031d3f952e6c.pdfIn PDF document text
    • http://trastenmyqort.online/60172836486lylxz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388062/normal_5ff5409d0aebf.pdfIn PDF document text
    • http://crawlmqyu.space/waruzuzorabobumuxoxupejewebp0.pdfIn PDF document text
    • http://lagulesuko.medianewsonline.com/how_many_pages_can_the_average_person_read_in_20_minutes.pdfIn PDF document text
    • http://circleshtang.xyz/how_to_calculate_write_off_for_home_officedo0ao.pdfIn PDF document text
    • http://hookup157.site/banomoya_amapiano_remix_song29akn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450040/normal_603c881bec999.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/sedajufijemaburamugiwari.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/apple_watch_with_android_phone_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e32f5546-9cd9-4c48-84b3-fc83ce623443/notazol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89dbc744-61a3-4d49-ac66-d7ac2491908c/tales_of_the_peculiar_book_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df34db89-6dbe-4f7e-8f34-3ea9af8b1e20/98686862778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ed9a34-8fba-4343-8b12-c5ae6d07c30c/how_to_prepare_for_nasm_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/casablanca_saad_lamjarred_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/99676387223.pdfIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000133f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133F4 5300 bytes
SHA-256: b39b0ba403da4243e6522fe3a622418d1414301bdcb73812030d682d4f5f0e9a
font_01_sfnt_off00014612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14612 11240 bytes
SHA-256: e2736fa0e10980b85289c27b6cf753a58a321e540b627d64c420c75eddcd0c47