Malicious PDF — malware analysis report

Static analysis result for SHA-256 547f5ac67983f1ab…

MALICIOUS

PDF

64.5 KB Created: 2021-02-15 17:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2bc48d257544a7a10c1cff041e507ebd SHA-1: 2e1a09878c6d21838b636901aa8648a0fb377327 SHA-256: 547f5ac67983f1ab906f3809a220d76806138f3084b5456f4cc2308bbc0a34d1
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://leonvi.ru/wb?keyword=how%20to%20start%20toro%20power%20clear%20snowblower PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488804/normal_602925290b487.pdfIn PDF document text
    • https://cdn.sqhk.co/vebudirepo/cuhejbl/ikea_us_facts_and_figures.pdfIn PDF document text
    • https://cdn.sqhk.co/lexoxuxoluvi/Lha8z15/26110681003.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/TGMRjdJ/zombie_age_1_mod_apk.pdfIn PDF document text
    • https://julureka.weebly.com/uploads/1/3/5/9/135957187/4779179.pdfIn PDF document text
    • https://cdn.sqhk.co/patizuruf/hahiche/riluforot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374376/normal_60195ef2b010b.pdfIn PDF document text
    • https://dojufewuwi.weebly.com/uploads/1/3/4/2/134235401/db01b6334bae5.pdfIn PDF document text
    • https://tesegedoveveda.weebly.com/uploads/1/3/4/8/134891870/beridalisexub.pdfIn PDF document text
    • https://cdn.sqhk.co/medujebukoma/cZ41fgf/haiti_radio_stations.pdfIn PDF document text
    • https://kumobavubisu.weebly.com/uploads/1/3/0/7/130775432/zozipelobed.pdfIn PDF document text
    • https://cdn.sqhk.co/mepetiruzi/Meijohj/94822879688.pdfIn PDF document text
    • https://cdn.sqhk.co/kojetovukufo/gqjc2lI/best_slashers_in_nba_2k19.pdfIn PDF document text
    • https://tujezagen.weebly.com/uploads/1/3/4/7/134775207/dapaseserixomax_taxapipala_zuvedoleledirar.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/kagedatabujo/samsung_frp_bypass_apk_5._1._1.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_off0000bfbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFBF 5120 bytes
SHA-256: 7cb38421b9c5903ffd482b8ea5472d8733ed2ab636f7364f3e30b0f6f3c8140d
font_01_sfnt_off0000d142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD142 10056 bytes
SHA-256: fe28ff4dffb97c1730bc6b182c289dcf912a34e626ca31ee90ebc2d68e0aa353