Malicious PDF — malware analysis report

Static analysis result for SHA-256 4504b02f52e9accf…

MALICIOUS

PDF

71.0 KB Created: 2021-02-10 17:36:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9e186abc60ddba498c078dd1800abdfe SHA-1: 18b2f13a8e6a161c5890cd3db705e2ee692da668 SHA-256: 4504b02f52e9accf08e6e7ee5499b863d74a1715e0244792447b248699166376
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://baarspo.ru/123?utm_term=minn+kota+trolling+motor+parts+manual PDF link annotation
    • https://repotadidutu.weebly.com/uploads/1/3/4/3/134310826/kulevosiletezefe.pdfIn PDF document text
    • https://gikatufezido.weebly.com/uploads/1/3/4/3/134338368/032d8d8f1d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461483/normal_602232e5e93c5.pdfIn PDF document text
    • https://zuxufigosod.weebly.com/uploads/1/3/4/3/134309968/7438751.pdfIn PDF document text
    • http://nokutanebufevon.iblogger.org/kadexu.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/hgjihdg/brick_crusher_hire_midlands.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473322/normal_5fd228a92574e.pdfIn PDF document text
    • https://jukudedavat.weebly.com/uploads/1/3/0/9/130969580/880807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383165/normal_601474db52ab7.pdfIn PDF document text
    • https://rozenawaxu.weebly.com/uploads/1/3/4/5/134517597/a4e9adb8b5.pdfIn PDF document text
    • http://usmileofficial.site/lmwh_reversal_guidelinesdnkmn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366623/normal_60018cda0f785.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/horstmann_electronic_7_maxistore_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/belitung_island_tourist_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/home_design_3d_crack_apk.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_off0000d295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD295 5208 bytes
SHA-256: 35365aa6d3b048deee6ebbbbf27ca1c4347d6cb78798f79707d6e3979aeb6276
font_01_sfnt_off0000e447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE447 13000 bytes
SHA-256: 6e9e726fed7b50b2997ff65dfa8f231331caeb894e5ac57e6b9b4dd47077d18d