Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cedd19239031406…

MALICIOUS

PDF

174.7 KB Created: 2021-03-18 19:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 7c061e0fc905b3c1008023f51466171c SHA-1: 697f2f5b4d29979e56b73e1ae2ed048afa438e6c SHA-256: 6cedd192390314069c3cb053fbc4ed4adc1b95d44703343f6676c5d51b2900ff
134 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with several pointing to disposable domains and one specifically flagged as a link farm. The 'SE_URGENCY_LURE' heuristic indicates the document likely uses deceptive language to prompt user interaction. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/strik?utm_term=les+miserables+soundtrack+broadway+cast PDF link annotation
    • http://neip-forum.fun/96183818976iby14.pdfIn PDF document text
    • http://fosavaxenu.mypressonline.com/wendys_frosty_nutrition_large.pdfIn PDF document text
    • http://cardioactiveitalia.site/tafoborufegebf5mwd.pdfIn PDF document text
    • http://zoomita.space/29067894463duksx.pdfIn PDF document text
    • http://lamejix.scienceontheweb.net/68240079856.pdfIn PDF document text
    • http://meetsol.xyz/android_app_on_windows_8._1_phonez7lwn.pdfIn PDF document text
    • http://penexej.mywebcommunity.org/ielts_academic_test_example.pdfIn PDF document text
    • http://bapadama.medianewsonline.com/computer_programming_books_download.pdfIn PDF document text
    • http://sluzhba1.net/jelaskan_konsep_cash_flow_quadrant_dari_robert_t_kiyosakifj5pj.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/how_do_i_clean_my_lg_inverter_direct_drive_top_load_washer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/masevewi/bulova_precisionist_watch_band.pdfIn PDF document text
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_5524bdff46a94977bd125adcddb54bb2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fujadabez/rimuwimububuvarejosunuw.pdfIn PDF document text
    • https://49b7c339-fea6-4bb3-bf7b-ca47af5263df.filesusr.com/ugd/6ca12d_8ad73f5cf7d7447ab0b4f93d19e07f10.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa75108-94a3-4002-94d7-f610ca4f0283/mechanical_engineering_jobs_in_pune_chakan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a85fe0e-df74-46b1-93e3-8d8aa5740e96/what_does_eye_of_horus_tattoo_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/86276255236.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24736 5308 bytes
SHA-256: b6c974ee8fe6f8cbe7f3fa58b04e17472d41b028aa29238a6aa9fd68587d739c
font_01_sfnt_off00025935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25935 14900 bytes
SHA-256: ccb55657f1a0fd8f20cb17611486bd9b4fc3cd3b7bff508260f5f21819e95dee
font_02_sfnt_off0002875c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2875C 16292 bytes
SHA-256: 74b3928b874042211253f184eb26f9a349cd733672d7a60eaef9485bb5ae803f
font_03_sfnt_off00029d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29D07 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2