Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6398e65064a672e…

MALICIOUS

PDF

74.8 KB Created: 2021-02-11 13:40:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 60990f6f9c2195683cba3be52d8ca99d SHA-1: 9e1238bd950cddb15160b80a8661b223437ff0cb SHA-256: f6398e65064a672e3c0cce2c57b122033a2c0c5404c5c51f5e4ec64f1b8fbcb8
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=winrar%205.%2071%20crackeado PDF link annotation
    • https://cdn.sqhk.co/xufaribo/hhaYJje/fexenesiduzutenujaranove.pdfIn PDF document text
    • https://cdn.sqhk.co/digubamot/efih3DX/solar_system_planets_wallpaper_hd.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/a0b2a6.pdfIn PDF document text
    • https://memapuzubabevu.weebly.com/uploads/1/3/0/8/130813849/3a0ea3c1a3b05.pdfIn PDF document text
    • https://dirifulezidume.weebly.com/uploads/1/3/2/7/132740871/bugemowufine.pdfIn PDF document text
    • https://wopixidotawus.weebly.com/uploads/1/3/4/5/134506387/298cb2c013109.pdfIn PDF document text
    • https://gejerirun.weebly.com/uploads/1/3/5/3/135312822/tupuladimirul_dumixudeda.pdfIn PDF document text
    • https://cdn.sqhk.co/lamikolo/iTidjix/homemade_chicken_goujons_calories.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://goxabepod.rf.gd/70469711904.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/platform_business_model_types.pdfIn PDF document text
    • http://goguvero.epizy.com/29866507373.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/cease_and_desist_letter_template_landlord.pdfIn PDF document text
    • http://rapuxatidugek.epizy.com/lamination_sheets_colours_in_pakistan.pdfIn PDF document text
    • http://naximeb.rf.gd/baxuku.pdfIn PDF document text
    • http://vewizoxevig.rf.gd/independent_together_sheet_music.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_off0000e7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C4 5088 bytes
SHA-256: 75b37c681d16ea6e840d2c1296149ac82aa09021032759ee1da2bd1b50048127
font_01_sfnt_off0000f94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94B 11000 bytes
SHA-256: 068caaf62397d9912a233e3ff9f5c9d8a42b6db025df1ebde9ce7e10100bc182