Malicious PDF — malware analysis report

Static analysis result for SHA-256 e983663420224f6c…

MALICIOUS

PDF

71.0 KB Created: 2021-02-12 20:57:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0e822d9be264e317460a0bce1737fc43 SHA-1: 4adf02ff226f46bd08bc9a833eda698489b2b8d8 SHA-256: e983663420224f6cde01172dd90df0bfcaec51cc3813cc687f1776ba17b163e9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/123?utm_term=usf+emergency+medicine+clerkship PDF link annotation
    • https://rujunile.weebly.com/uploads/1/3/2/7/132710621/nunow.pdfIn PDF document text
    • https://weduparazibad.weebly.com/uploads/1/3/4/7/134710999/8188325.pdfIn PDF document text
    • http://panijawukufo.iblogger.org/70928856650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487005/normal_60175cedc14ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477400/normal_601cb1658b6b6.pdfIn PDF document text
    • https://xanusikufugab.weebly.com/uploads/1/3/4/3/134371049/a414dbb618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_601225ddefda6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vukefuxi.epizy.com/33620287599.pdfIn PDF document text
    • http://zobotipuzadevi.epizy.com/taruxida.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/highwayman_poem_questions_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/litorepovuket.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/darkest_dungeon_team_building_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/apollo_munich_mediclaim_premium_chart.pdfIn PDF document text
    • http://fowasabitafal.epizy.com/41824901674.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/half_flannel_half_cotton_sheets_queen.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_off0000d87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87D 5516 bytes
SHA-256: 177718951129d518634ee282a2a7adbf8fabc94c533d7aef44515175ff6d461c
font_01_sfnt_off0000eb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB29 10552 bytes
SHA-256: d7c05fda295e341f4c52c3145a864fb8d718566ebb03f123bb06b98c56b2bcf3