Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7624d131cac6a17…

MALICIOUS

PDF

70.6 KB Created: 2021-03-06 02:32:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9c0b2b92bef9cb48b31557cee2b0b007 SHA-1: da0f6a57e831577fc5bdf160b00af5bf2f3ffb6a SHA-256: d7624d131cac6a17df752615ac3b1e4e2965d899091a5fce5d03b24fe28a1c28
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=how+do+i+program+my+ge+6+universal+remote+without+codes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4501233/normal_5fdb163680c4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473053/normal_5fd1ffe2dfb28.pdfIn PDF document text
    • https://cdn.sqhk.co/zegareguw/Ftehehj/74374088527.pdfIn PDF document text
    • https://cdn.sqhk.co/welosezu/iUw5s5W/assistant_professor_vs_associate_professor_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/aY0YAhd/patosevemavowepadi.pdfIn PDF document text
    • http://vabuletarikinil.iblogger.org/bitidomojisudo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461509/normal_601dac1e131fb.pdfIn PDF document text
    • https://wezefumuge.weebly.com/uploads/1/3/4/6/134614004/jasoxe_raranerer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426422/normal_6024c6e56641e.pdfIn PDF document text
    • https://lerasakob.weebly.com/uploads/1/3/2/6/132682990/7868770.pdfIn PDF document text
    • https://viradigoposexa.weebly.com/uploads/1/3/4/3/134383508/petazogidogop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476757/normal_5fdacc3f602f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419847/normal_600f203fa6779.pdfIn PDF document text
    • https://cdn.sqhk.co/mifimafonuku/ihZaiaU/hungry_fisherman_restaurant_john_s_pass.pdfIn PDF document text
    • https://mofagobebaz.weebly.com/uploads/1/3/4/6/134633285/bilavex-gixet-nowokarulopi.pdfIn PDF document text
    • http://sidazolomaw.22web.org/50685582982.pdfIn PDF document text
    • https://dojifidixiwaji.weebly.com/uploads/1/3/4/3/134372722/3370319.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sijaxulo.rf.gd/tata_bye_bye_vellostha_song.pdfIn PDF document text
    • http://zexubadisaki.rf.gd/billboard_2009_top_100.pdfIn PDF document text
    • http://mafujegimeti.rf.gd/81129605610.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_off0000d56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD56E 5856 bytes
SHA-256: 046394fb3768d0300a62d4a24ec97b4ae0a9bfd5a19236458eeee74c7839bdee
font_01_sfnt_off0000e950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE950 10368 bytes
SHA-256: f296bc78840c6859ba4ef9de9e574ce7753b57136046e51465127d6ff3f21511