Malicious PDF — malware analysis report

Static analysis result for SHA-256 499f27dfeae1a54c…

MALICIOUS

PDF

73.4 KB Created: 2021-01-21 01:14:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 1311164a2fec64aa17ed81654918d2d8 SHA-1: 721398516a6ee704f8e580d65991ed053b740006 SHA-256: 499f27dfeae1a54caff2694c649cb5375b603158f6940411803e54160c97781d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/wb?keyword=smashburger%20hours%20notre%20dame PDF link annotation
    • https://sixokibikije.weebly.com/uploads/1/3/1/4/131437702/puluneja.pdfIn PDF document text
    • https://gazezujebek.weebly.com/uploads/1/3/4/8/134881616/a9fc6eba486c25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415767/normal_6006567edbef8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f87cf59c836a.pdfIn PDF document text
    • https://tigidejuremu.weebly.com/uploads/1/3/4/5/134502839/f695272c4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5fc6815e2f273.pdfIn PDF document text
    • https://site-1239421.mozfiles.com/files/1239421/kerbal_space_program_fighter_jet.pdfIn PDF document text
    • https://nejaxadutoxukax.weebly.com/uploads/1/3/4/6/134622523/jasowuwudo_rebarupabon.pdfIn PDF document text
    • http://wegijezunulej.22web.org/tozapagebufewuguk.pdfIn PDF document text
    • https://site-1176591.mozfiles.com/files/1176591/cartoon_girl_wallpaper_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://repibikapowa.epizy.com/85776241291.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/40620738573.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/kisavadipotumewojadeze.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/adamic_language.pdfIn PDF document text
    • http://gozulejawefufap.epizy.com/vawowi.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_off0000e1ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AD 5452 bytes
SHA-256: b5b53bc9edc4023edb368ded4b126efe1cebad3b17303cf4030ba9e1e757b791
font_01_sfnt_off0000f3fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FE 11256 bytes
SHA-256: 217b870ab3ad5947d077311058161aaa2455b339449d945089cb3554937a2bdc