Malicious PDF — malware analysis report

Static analysis result for SHA-256 68764b329a245852…

MALICIOUS

PDF

100.5 KB Created: 2021-03-16 17:34:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: de7bc1c1ecfd8f810666fe88f57e1a87 SHA-1: 9e5cc145f8095c31ecf4dca8e6d5903a8089cfba SHA-256: 68764b329a245852c129177aed2523f998b2d21fb3b04648743751cf6638784d
226 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. The presence of a 'Clipboard command execution lure' heuristic indicates the document attempts to trick the user into executing commands, likely to download and run a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://druttle.ru/strik?utm_term=what+does+the+telomere+do PDF link annotation
    • http://tegor.xyz/21941845122wys81.pdfIn PDF document text
    • http://rasuwek.22web.org/teach_your_monster_to_read_levels.pdfIn PDF document text
    • http://ulekschool.online/35525333129rsb4v.pdfIn PDF document text
    • http://naturagrush.space/big_city_life_simulator_moduyo2r.pdfIn PDF document text
    • https://nabinavupofi.weebly.com/uploads/1/3/5/3/135350319/374cf34.pdfIn PDF document text
    • http://luxibenuguk.getenjoyment.net/modelo_de_memorandum_de_llamada_de_atencion_por_incumplimiento_de_funciones.pdfIn PDF document text
    • https://solakozejifu.weebly.com/uploads/1/3/5/3/135347449/suxomabete.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/how_to_connect_vizio_sound_bar_to_sub.pdfIn PDF document text
    • https://motixovelubebov.weebly.com/uploads/1/3/6/0/136085904/belagosabafe_vopire_rikotojepavexa_jutozajap.pdfIn PDF document text
    • https://rukagevilatixa.weebly.com/uploads/1/3/1/6/131608017/gukevupapaveturovi.pdfIn PDF document text
    • https://zitewamim.weebly.com/uploads/1/3/1/4/131454986/zobaxugarexifil-vepamibukadi.pdfIn PDF document text
    • https://berizezemimuto.weebly.com/uploads/1/3/2/6/132695806/72779d9f8a8524.pdfIn PDF document text
    • https://dobuxavebixeli.weebly.com/uploads/1/3/4/7/134725246/13e6dfe211.pdfIn PDF document text
    • https://wipemaxo.weebly.com/uploads/1/3/5/3/135345075/fopukaxi.pdfIn PDF document text
    • https://fowuwulavo.weebly.com/uploads/1/3/4/7/134754099/bcec1cb1.pdfIn PDF document text
    • http://affilateapp.online/can_you_use_ps_vita_games_on_ps4ofi1n.pdfIn PDF document text
    • https://kakituku.weebly.com/uploads/1/3/4/5/134589995/2823679.pdfIn PDF document text
    • https://felabare.weebly.com/uploads/1/3/0/7/130776415/9693435.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobuwijezad.onlinewebshop.net/benchmarking_tools.pdfIn PDF document text
    • http://senumodad.rf.gd/cen_sad_treaty.pdfIn PDF document text
    • http://lamupilabixekuw.epizy.com/ganesh_ji_aarti_marathi_song.pdfIn PDF document text
    • http://zitagarutotegiv.rf.gd/introductory_mathematical_analysis_for_business_economics_13th_edition.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_off000148d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148D9 5076 bytes
SHA-256: a4917abf13053c5d76c4013d18a2a788ebc2ac3180d1df2877121313fe59ee8c
font_01_sfnt_off000159f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159F9 13580 bytes
SHA-256: 0f1d2fb5b33a30f392913c3aae94364815c2d13881dcdda260f2ca9815bab01a

Open this report in the interactive analyzer, or submit your own file for analysis.