Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87c48d49dd1a8f8…

MALICIOUS

PDF

69.4 KB Created: 2021-02-23 16:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6686a7e7c213ae043edd64fddb920a8d SHA-1: f1ca84da8ba92ef6a3ddff3a81e36c162293f13a SHA-256: f87c48d49dd1a8f83823f77f6c0917e8af11440bace6e8b0ebc5c55242b51ea9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://maypoin.ru/strik?utm_term=sub+zero+fridge+freezer+size PDF link annotation
    • http://oneshops.space/88334208633mzwc1.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/iUC5Rjb/xalav.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/fifuxowevagesurevufmu65b.pdfIn PDF document text
    • http://snapchat-alert.com/bofegutafift6oql.pdfIn PDF document text
    • https://cdn.sqhk.co/devisojop/F4gfne9/shotgun_sounds_to_scare_birds.pdfIn PDF document text
    • http://apsdd54gfv.xyz/root_browser_apkpureju6bt.pdfIn PDF document text
    • https://cdn.sqhk.co/sifolilo/DjeijNd/bisikerirulofurugulib.pdfIn PDF document text
    • http://manybigs.space/dedurijevatafavirou353.pdfIn PDF document text
    • https://cdn.sqhk.co/xubupigegi/jeicjha/espn_fantasy_football_rankings_week_6.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/12RDQZF/wizard_of_oz_quotes_heart.pdfIn PDF document text
    • http://gadezobokonej.iblogger.org/jazz_and_blues_experience_album_free.pdfIn PDF document text
    • https://gunujudota.weebly.com/uploads/1/3/2/3/132303168/65b60bdb513.pdfIn PDF document text
    • http://fitoxis.22web.org/zuminak.pdfIn PDF document text
    • http://liketime.online/fallout_rpgnz433.pdfIn PDF document text
    • http://strapslap.online/240820334908ihrr.pdfIn PDF document text
    • http://mexicotop.xyz/11829654352kjgh3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jegujijixunef.rf.gd/71191626882.pdfIn PDF document text
    • http://zejagal.rf.gd/lutoxinulixamenanozom.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_off0000d3bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BB 5124 bytes
SHA-256: 7ab854060abe367bba8619fe92e5ae4d01a088fe09534f547e6dcedd978400ab
font_01_sfnt_off0000e541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE541 10352 bytes
SHA-256: 512fea59bf37b25a5965156c64e04d5458b3e0522686aadfa65444b1ff23e1ce