Malicious PDF — malware analysis report

Static analysis result for SHA-256 396a58be1752090d…

MALICIOUS

PDF

72.1 KB Created: 2021-03-04 01:40:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 72134e6699c1308a882608db74d74cc0 SHA-1: e64960b0ad89780e1fc777eab3ad203339f7d3b7 SHA-256: 396a58be1752090d7ec8809628239cad14ad1d2ed222d08f6eb53be03399a519
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://jumiwimov.ru/award?keyword=how+can+i+learn+russian+fast+and+free PDF link annotation
    • https://cdn.sqhk.co/wuwoxegolewa/ajdLhhf/kumudutixo.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/bMtwFie/18669609541.pdfIn PDF document text
    • https://nibotilujegaw.weebly.com/uploads/1/3/1/3/131381886/7906078.pdfIn PDF document text
    • https://cdn.sqhk.co/sukonazukuv/chdvg5o/nfl_week_12_schedule_changes.pdfIn PDF document text
    • http://porizaritofo.mypressonline.com/jusunejinigul.pdfIn PDF document text
    • https://cdn.sqhk.co/vojazodelud/OFgieid/zombie-_online_app_zombies_attack_games.pdfIn PDF document text
    • https://cdn.sqhk.co/lojadisexudo/fjiijgh/dofenelubawefamazim.pdfIn PDF document text
    • http://nakozek.mypressonline.com/3202036526.pdfIn PDF document text
    • https://cdn.sqhk.co/rajexizeba/jPXjhji/starlink_launch_today_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepilekot/irdpJgi/11301783990.pdfIn PDF document text
    • https://cdn.sqhk.co/lazaxosu/B31ifQV/35080829112.pdfIn PDF document text
    • https://xuzubakew.weebly.com/uploads/1/3/0/9/130969304/124735.pdfIn PDF document text
    • https://fabisinutufonos.weebly.com/uploads/1/3/5/9/135993578/momaxeretebakuru.pdfIn PDF document text
    • https://cdn.sqhk.co/dabigewom/elrhahc/nivutepozuduz.pdfIn PDF document text
    • https://labekefetimobu.weebly.com/uploads/1/3/0/7/130739294/samowepo.pdfIn PDF document text
    • https://cdn.sqhk.co/lekaguko/ghuPGhh/la_liste_2020_des_metiers_en_tension.pdfIn PDF document text
    • http://vozuzutiwajuzip.getenjoyment.net/97776492911.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/idemroS/dog_rescue_puppies_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/wugeguxu/eie4ibB/minecraft_pe_1._16_skyblock_server.pdfIn PDF document text
    • https://fogunovavak.weebly.com/uploads/1/3/2/6/132681822/5272477.pdfIn PDF document text
    • https://cdn.sqhk.co/wifepodilojo/igxigsZ/9264018276.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zepizevut.atwebpages.com/2087916726.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_off0000de1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1B 5068 bytes
SHA-256: 1ab42ab9209ab3bbeba7cb856a70c0e12de6c75a9a5ed135dda631afe4ef9bb3
font_01_sfnt_off0000ef78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF78 10428 bytes
SHA-256: b77cdaa065ef69019be1bad393e31ea53242aee9fc8ef11656454a2daeac10c5

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