Malicious PDF — malware analysis report

Static analysis result for SHA-256 965f3c2bc208be38…

MALICIOUS

PDF

73.2 KB Created: 2021-03-01 04:13:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f1eb17faf755ae3526d38cb95fc1805e SHA-1: 2aaec6d93a218b89fa9542f8f91713dd594d5b20 SHA-256: 965f3c2bc208be38d6de2ffb9e2a75a7c998969b6549e1a4c9ec97eadce67e1a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/award?keyword=you+know+something+is+wrong+when PDF link annotation
    • http://newyearshop.site/vefodebejujumetasimb6wpu.pdfIn PDF document text
    • https://dirusase.weebly.com/uploads/1/3/1/0/131070798/saxurevorili_tiwakilo_rowopabif_sebigis.pdfIn PDF document text
    • http://cmb-accueil.com/best_management_books_for_new_managerszpkz1.pdfIn PDF document text
    • https://manedubel.weebly.com/uploads/1/3/4/5/134587872/pojamej.pdfIn PDF document text
    • https://cdn.sqhk.co/zinoliwomi/hbidhig/35718805467.pdfIn PDF document text
    • https://xebuzoxovekig.weebly.com/uploads/1/3/4/0/134018553/054340535a.pdfIn PDF document text
    • http://nibelv.xyz/31374431615zocs.pdfIn PDF document text
    • https://bajozofexowabir.weebly.com/uploads/1/3/1/3/131398176/158d59.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/9350486.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/psychology_12th_edition_david_g._myers_c._nathan_dewall6xac9.pdfIn PDF document text
    • http://lbaranaydin.com/how_many_btu_is_a_carrier_weathermaker_9200ygs5j.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/suxugipipolazog/computer_bill_format_excel.pdfIn PDF document text
    • http://zotawof.rf.gd/super_auto_typer.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/xenufufexe.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_off0000e29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29B 4972 bytes
SHA-256: 5ef100ac61d986badebb411651a55e04dc774af6007851b83f49ea99fd8f2d54
font_01_sfnt_off0000f374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF374 10700 bytes
SHA-256: 7db926b498009ec5cfb3347275c5fcca4d2046a5bb0d5e507c2a76914758199e