Malicious PDF — malware analysis report

Static analysis result for SHA-256 01fefe6d9ad2c181…

MALICIOUS

PDF

72.6 KB Created: 2021-02-10 17:17:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 765e6923bf9c7a5b9fb049fb2c1b0792 SHA-1: ce27a217f13b92adbcae5f25ce4788f4b1943c2d SHA-256: 01fefe6d9ad2c1811d76a0cb8d7def282ecc100d55a35a1b76355e8f470bae6c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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://crophysi.ru/123?utm_term=interpreter+of+maladies+short+story In PDF document text
    • http://clyb-wylcan3.space/pujebojokajer7m6c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506170/normal_6007c861b6303.pdfIn PDF document text
    • http://pubifirona.22web.org/agilent_5100_icp-_oes_site_preparation_guide.pdfIn PDF document text
    • http://fastcreditreport.info/28905683542n1yfq.pdfIn PDF document text
    • https://sivevaredewiw.weebly.com/uploads/1/3/4/4/134464028/lojejuxezupejutawij.pdfIn PDF document text
    • https://mulodetudujidof.weebly.com/uploads/1/3/5/3/135325190/3069852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447885/normal_602034f19cb3d.pdfIn PDF document text
    • http://rafale.store/jugexilikilinaweterekvkoyt.pdfIn PDF document text
    • https://rigafimer.weebly.com/uploads/1/3/4/9/134901715/2fbe16c.pdfIn PDF document text
    • http://mscredit.info/we_love_master_walkthroughd7mcb.pdfIn PDF document text
    • http://xrootunited.com/ntsb_investigation_database95a2p.pdfIn PDF document text
    • http://testrun.ru/241106533184qw04.pdfIn PDF document text
    • http://milesnires.xyz/voice_assistant_off4l09d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nozaleb.rf.gd/wegixinadek.pdfIn PDF document text
    • http://toxezapa.rf.gd/curriculum_vitae_template_in_word_format.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_off0000dfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEE 5320 bytes
SHA-256: fc6f10fd81b67c070fbd35c0ceceaed115b4c7479689785b5825765798886ece
font_01_sfnt_off0000f1de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DE 10532 bytes
SHA-256: 9a54f5c17bf597abb85e6da2d0b639f157f39c81f3d6863b0be5f42024d5cec9