Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ef886654743372f…

MALICIOUS

PDF

64.6 KB Created: 2021-02-24 05:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5468d2252fec7048732d5ef5c9c8d0bc SHA-1: 4b22a18343d4f16a6f7fe9fe12bbcacfccf1ae7b SHA-256: 4ef886654743372fa6b251d283a45461fc3dfbb0d3f6bcceec1887831c2b560e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://seumenha.ru/strik?utm_term=2002+yamaha+kodiak+400+value PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384644/normal_5fcce6ba242eb.pdfIn PDF document text
    • https://mibugekokedepi.weebly.com/uploads/1/3/2/6/132682655/eb96692dca.pdfIn PDF document text
    • https://votivugaxowo.weebly.com/uploads/1/3/1/1/131163932/6164683.pdfIn PDF document text
    • https://cdn.sqhk.co/dakuwuwuzije/ijjdCQM/mukanavavuritujedekasabig.pdfIn PDF document text
    • https://cdn.sqhk.co/nesunarimu/EhgMjd4/55149978389.pdfIn PDF document text
    • http://jalatuxu.iblogger.org/munchkin_bottle_warmer_manual.pdfIn PDF document text
    • http://oneitshop.info/dunuwavetotamizutwphp3.pdfIn PDF document text
    • http://gabagasijax.iblogger.org/bad_blood_book.pdfIn PDF document text
    • http://technodom11.com/jeppesen_airframe_textbook_freez9mra.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bigerubuseke.rf.gd/abyna_morgan_magic_spot.pdfIn PDF document text
    • http://wuvasof.epizy.com/gibbs_reflective_cycle_template.pdfIn PDF document text
    • http://vikogen.epizy.com/vinirovusuvekakibas.pdfIn PDF document text
    • http://rajiwewovipu.epizy.com/digital_vernier_caliper_least_count.pdfIn PDF document text
    • http://bubizimus.epizy.com/what_do_you_call_the_process_of_making_wine.pdfIn PDF document text
    • http://tepuvat.epizy.com/basubegazenaxisotemekugow.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_off0000c036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC036 5284 bytes
SHA-256: 3d2d21dfa72dc5531196ceaff02b453d77f5655298f220220f6c3747c566f709
font_01_sfnt_off0000d21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21A 10508 bytes
SHA-256: cdb17d7b44ed7207eb0b5576f0500a44be362a73f7734d3cae2aad82afc4366f