Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c085327a96c7f91…

MALICIOUS

PDF

71.0 KB Created: 2021-03-01 01:55:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 63e82cd5f5b04dc83ac093af99044260 SHA-1: 96e8a85022550ef6f16e0547e8a250bc58f70df4 SHA-256: 8c085327a96c7f910d2b6b777f6ba0a5941313a6b8e319ef301f4190c695ea74
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=sadlier+vocabulary+workshop+level+d+unit+5+test In PDF document text
    • https://cdn.sqhk.co/goberirud/a1jf5ie/furniture_stores_hubbard_oh.pdfIn PDF document text
    • http://kowojolajamuv.getenjoyment.net/what_is_the_most_common_isotope_of_boron.pdfIn PDF document text
    • https://cdn.sqhk.co/butemobe/iQghhaU/pikan.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/the_art_of_r_programming.pdfIn PDF document text
    • http://mesretly.xyz/faxosatanedimipuzamimu6ofe7.pdfIn PDF document text
    • http://nafarami.medianewsonline.com/27524298149.pdfIn PDF document text
    • http://sunny-web.ru/karl_marx_capital_book59nk3.pdfIn PDF document text
    • https://cdn.sqhk.co/medugagoviji/chhpii1/peekaboo_hide_and_seek_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/jKQiehe/dipiwigokatisuvugab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://likutolejit.onlinewebshop.net/45885163758.pdfIn PDF document text
    • http://roritobefeda.rf.gd/citra_android_game_compatibility.pdfIn PDF document text
    • http://bajobakokela.epizy.com/83404206930.pdfIn PDF document text
    • http://gonuwufif.epizy.com/38340204924.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/47355662915.pdfIn PDF document text
    • http://nibizuladode.onlinewebshop.net/walmart_photo_promo_codes_october_2019.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_off0000d777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD777 5848 bytes
SHA-256: cd14ade31b87e0685aa46a2677eade2e90884bf19ace4cda8a22bddd76c227f5
font_01_sfnt_off0000eb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB71 10548 bytes
SHA-256: afae85644ddeb43087594f812094032bfc740b4264972066cc0afcec92f46d05