Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f0645f1057d9c2…

MALICIOUS

PDF

67.4 KB Created: 2021-02-18 03:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5d7c7169db33f33c77a33ecb2aaf7b30 SHA-1: 1ca86cfca55cf46e4ff3045d6d7dc8472f271b5f SHA-256: e7f0645f1057d9c28b90b621da2da5b722b3f31594d0cae846217df93ad58ee1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/wb?keyword=maxi%20cosi%20mico%20limited%20edition%20newborn%20baby%20capsule PDF link annotation
    • http://vetodegaro.22web.org/cheat_sheet_java_collections.pdfIn PDF document text
    • https://sofirutowik.weebly.com/uploads/1/3/1/3/131381411/futedagilova.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/gcRWaig/mijutojit.pdfIn PDF document text
    • https://cdn.sqhk.co/gupetipek/Ghc3K9f/19946717641.pdfIn PDF document text
    • https://sabopedawexidix.weebly.com/uploads/1/3/4/3/134305122/1821468.pdfIn PDF document text
    • https://fitulepam.weebly.com/uploads/1/3/0/8/130874207/210419b7cf.pdfIn PDF document text
    • https://xapowukugo.weebly.com/uploads/1/3/4/7/134702937/wugagitozamabuzup.pdfIn PDF document text
    • https://tidatulo.weebly.com/uploads/1/3/2/8/132815220/4883053.pdfIn PDF document text
    • https://gitexapovaje.weebly.com/uploads/1/3/4/4/134464395/jopegixumujekidin.pdfIn PDF document text
    • https://misapunuzure.weebly.com/uploads/1/3/1/6/131606411/zukidofukafixiran.pdfIn PDF document text
    • https://tezijetukiresu.weebly.com/uploads/1/3/5/3/135394197/koxejexejesa-vatibevedibe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kanisal.epizy.com/budadowokajinakedumo.pdfIn PDF document text
    • http://sojisij.epizy.com/longitude_and_latitude_worksheet_answer_key.pdfIn PDF document text
    • http://pupogoxegaze.rf.gd/tifaripiva.pdfIn PDF document text
    • http://xewewiwuxadul.rf.gd/35737693423.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_off0000c97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97C 5628 bytes
SHA-256: 4126447d2c61863f6376f8c6ad032cb8ce075bf51641edb6e649d957f580333f
font_01_sfnt_off0000dca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA7 10540 bytes
SHA-256: e3171e5a82334d86af6dfd11682c8c9441633b959d95e5570fcd79b0c8a5fb9c