Malicious PDF — malware analysis report

Static analysis result for SHA-256 a193669119b19332…

MALICIOUS

PDF

72.4 KB Created: 2021-02-07 09:46:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b1c9a3189c9a2c63b0db8879206b4a07 SHA-1: eaa2abf5ebca781f7566c18e1a08035fcc7d51b0 SHA-256: a193669119b19332f5d843daebce2ae2d18aeb455f5c7f8179d97069550b48ba
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=flow+cytometry+basics+pdf PDF link annotation
    • http://shtangelkipokupkiitd.online/829789994834dbj2.pdfIn PDF document text
    • https://webexozaputer.weebly.com/uploads/1/3/2/6/132681415/nakesufil_pexoniben_tazezunebex.pdfIn PDF document text
    • http://thelandofbadideas.com/3046249980eyv7j.pdfIn PDF document text
    • http://dazenad.iblogger.org/avg_tuneup_2016_free.pdfIn PDF document text
    • http://jazejoravasog.22web.org/guidelines_pulmonary_embolism.pdfIn PDF document text
    • http://dimax.website/iphone_lock_screen_full_hd_live_wallpaperslhbs.pdfIn PDF document text
    • https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/ramamesa_gipaleligoberug.pdfIn PDF document text
    • http://todayshop.website/ladenusaniyrc37.pdfIn PDF document text
    • http://fezomoworiva.22web.org/76323535998.pdfIn PDF document text
    • https://sitekitenuzuvi.weebly.com/uploads/1/3/2/3/132303150/vadoli.pdfIn PDF document text
    • http://palejep.22web.org/vscode_remote_ssh_ing_with_wget.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/pomagexezetafuf3fnc.pdfIn PDF document text
    • http://gilutij.iblogger.org/4262284495.pdfIn macro / runtime command snippet
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/6652505.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/pomagexezetafIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muvubavove.epizy.com/rekevabexe.pdfIn PDF document text
    • http://xurolawewetaw.epizy.com/encrypt_assets_folder_android.pdfIn PDF document text
    • http://wufiwujexuwinaw.epizy.com/bukhari_sharif_bangla_tawheed_publication.pdfIn PDF document text
    • http://robefopatobut.epizy.com/17714022801.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_off0000ddec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEC 5592 bytes
SHA-256: b1688138c371f22f37709b94d55f42be04df45b9913a8d4eb5f8f16a1977bff9
font_01_sfnt_off0000f0ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EE 10508 bytes
SHA-256: 59cdf5ca5faa64e37f4eb92d9cd67a2c0b727f147c6c735536addf8466b866ab