Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30c9cbb2ce506f5…

MALICIOUS

PDF

72.7 KB Created: 2021-02-04 08:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2870f7c39ed8475e22974328dedc75ee SHA-1: 7011ada1270fbfcc248773a8f1dda1589b0a563d SHA-256: c30c9cbb2ce506f5d475a73f6ac03323a7956372d1b8ae1428b8fc3795155964
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=another+word+for+capable+of+being+understood PDF link annotation
    • https://wefogazasu.weebly.com/uploads/1/3/4/8/134880183/3181069.pdfIn PDF document text
    • https://wusedutewaxugag.weebly.com/uploads/1/3/1/4/131437839/6402458.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/cElShi7/fall_school_start_date_2020.pdfIn PDF document text
    • https://lidafeli.weebly.com/uploads/1/3/4/6/134683499/12c8b2122f55626.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413118/normal_600969fc7dc1f.pdfIn PDF document text
    • https://cdn.sqhk.co/felodunom/mdoggW3/pawosekukitawuvuwuzo.pdfIn PDF document text
    • https://rinotawobuv.weebly.com/uploads/1/3/4/7/134768279/xulota.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/a9Q6Whc/pioneer_woman_pico_de_gallo_and_guacamole_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/leburogutu/ihdjgq8/juventus_jersey_2018_away.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416798/normal_5fca03b7688a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nisinukodepafix.rf.gd/hangzhou_food_guide.pdfIn PDF document text
    • http://wedagavuvux.epizy.com/84706792394.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/fox_fishing_clothing_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/calibre_epub_converter.pdfIn PDF document text
    • http://kipenul.epizy.com/airpods_2_wireless_charging_case_manual.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_off0000d973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD973 5640 bytes
SHA-256: 1d013cbe1809c585ccb6e83cdfa825229b1642801bdef9e1e83a2337ff3a7b3d
font_01_sfnt_off0000eca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA4 12592 bytes
SHA-256: 0eed0948614a310edbabb1051e0780eb109d7da2c6cbe33526605b7ed71e18cf