Malicious PDF — malware analysis report

Static analysis result for SHA-256 493cb2fd24817150…

MALICIOUS

PDF

71.7 KB Created: 2021-02-04 04:30:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0051b47284a54c37927119bee417f21b SHA-1: 5a6c95479ba98d1303ac8314d2c2a149afe09afa SHA-256: 493cb2fd2481715072bd202c6a9d8b382e8060aa2d29b0a5695be83354a9a85b
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://leonvi.ru/aws?utm_term=friendship+day+date+sheet PDF link annotation
    • https://gumevuwogixuxuj.weebly.com/uploads/1/3/5/3/135317748/zokufesedow_pukojibinamam_xafatoxemit_kiwosefijopip.pdfIn PDF document text
    • http://seedcraft.online/zovimiwolesojxgh.pdfIn PDF document text
    • https://ferizovewop.weebly.com/uploads/1/3/4/8/134887996/f1fc7ccb1480.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/cic1rje/zombie_sticker_ps4.pdfIn PDF document text
    • http://thepropheticapp.com/ejercicios_tabla_numero_atomico_y_masico_3_esow2w4g.pdfIn PDF document text
    • https://dajikunizitawis.weebly.com/uploads/1/3/1/1/131163857/zixebokuxozabiwusaji.pdfIn PDF document text
    • http://vudujupuboneg.22web.org/22209394659.pdfIn PDF document text
    • http://probkin34.xyz/16535405736umksq.pdfIn PDF document text
    • https://degusatujetuz.weebly.com/uploads/1/3/0/8/130813325/b5fdcd.pdfIn PDF document text
    • http://arm-watch1.club/2859455492051met.pdfIn PDF document text
    • https://turabebusaweni.weebly.com/uploads/1/3/1/4/131438207/sezijafege-neduvibelaro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lafumiseweno.epizy.com/mawavuvavi.pdfIn PDF document text
    • http://pisexudovekozus.rf.gd/texatatisajaf.pdfIn PDF document text
    • http://juzavinozil.epizy.com/villain_bengali_movie_bhole_baba_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/pavikupegi.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_off0000dc79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC79 5072 bytes
SHA-256: 9ae8482ea756726700255d3b19256d3cb8ba1e470a1273ca7a20c1099efcca9c
font_01_sfnt_off0000edbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 10724 bytes
SHA-256: d8df9b9de0d755f1db302f4190d2f63abcc5b3caceffdcfaadd0e21d36b43246