Malicious PDF — malware analysis report

Static analysis result for SHA-256 523a8ec344eb4b72…

MALICIOUS

PDF

68.1 KB Created: 2021-02-20 18:14:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: eda27c5b686f2b065994278bd4fd772b SHA-1: 3f8d49671097d0f3348c6850ec07bd78bbf7e8c2 SHA-256: 523a8ec344eb4b729d47eb62fb0d2a6d3fb7667c4010e9c6e4d3d670effca59f
126 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
  • 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://bologen.ru/aws?utm_term=how+to+take+apart+a+faucet+head PDF link annotation
    • https://cdn.sqhk.co/xisalaximel/gksheif/ghost_rider_wallpaper_download.pdfIn PDF document text
    • http://axacheat4.xyz/jomegobijotajofasotafokenpomka.pdfIn PDF document text
    • http://daating19.site/64155950028gjay7.pdfIn PDF document text
    • http://antonioit.fun/lenovo_tab_2_a7-3015iz0.pdfIn PDF document text
    • http://navaram.online/10829892857birod.pdfIn PDF document text
    • http://werenntaq.online/cam_icu_flowsheet_deutschghnaq.pdfIn PDF document text
    • http://munupesifak.22web.org/funidefajejo.pdfIn PDF document text
    • http://all-host.site/digagalikakomen9lg2p.pdfIn PDF document text
    • http://nibumuxadata.66ghz.com/greys_anatomy_spoilers_guide.pdfIn PDF document text
    • http://apple-fruit.space/stihl_bg55_leaf_blower_reviews9w9ji.pdfIn PDF document text
    • http://uggi-ugg.com/kamegebopul8egr2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zemadepa.rf.gd/navigation_bar_color_android_10.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/2150769957.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/zemubapemipazebarurofe.pdfIn PDF document text
    • http://gokegufokefewev.rf.gd/1681860398.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_off0000cc26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC26 5148 bytes
SHA-256: 056dfca6bdc8dd000604b562aff7af5c142bfd06711dcc317aa72715f96238c6
font_01_sfnt_off0000ddba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBA 11804 bytes
SHA-256: fa82d8201698fb5c7e3338919c7a6fdea9c7bbd25133ffbd1f197ed8b2bac34c