Malicious PDF — malware analysis report

Static analysis result for SHA-256 e847be22e1feb8d5…

MALICIOUS

PDF

87.0 KB Created: 2021-02-15 18:22:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 38e27d1dc85c345ec6619384e4590437 SHA-1: 99ad59df8f289d1156a2cf92c1ab2831b6eb7117 SHA-256: e847be22e1feb8d59d96190917abdbbc68541f8076b3d10088b73a3c43351a50
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body contains text related to a video game, likely as a lure, and embeds numerous URLs, one of which is a known phishing domain. The presence of embedded URLs and the overall structure suggest an attempt to redirect the user to malicious content.

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://seumenha.ru/strik?utm_term=metal+gear+solid+3+shagohod+boss+fight PDF link annotation
    • http://remastacer.com/die_stunde_der_dilettantenrss8i.pdfIn PDF document text
    • http://plafond.xyz/rome_2_augustus_campaign_guideh9rxd.pdfIn PDF document text
    • http://falaxedenodomu.iblogger.org/velerutubawavilezufi.pdfIn PDF document text
    • http://tersq.space/ftdi_chip_datasheetqtjwo.pdfIn PDF document text
    • http://mastericy-chistoty.ru/xovakez9yx1w.pdfIn PDF document text
    • http://chatik85939775.fun/23936130557yx9mz.pdfIn PDF document text
    • http://smotrikino.fun/crontab_schedule_format_in_linux4nlk6.pdfIn PDF document text
    • http://madamzero.com/the_beatles_piano_songbookbk4ts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://melumudinev.epizy.com/chahat_full_hd_movie_movies_counter.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/3mm_aluminium_sheet_perth.pdfIn PDF document text
    • http://bezofiwod.rf.gd/koderixevemizitenujowawix.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/autocad_electrical_library_dwg_free.pdfIn PDF document text
    • http://kobewanen.rf.gd/jusimonukibimamiwoniva.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/chevrolet_camaro_2012_manual.pdfIn PDF document text
    • http://gapisoga.rf.gd/2175945541.pdfIn PDF document text
    • http://ditufadupogeju.epizy.com/163056119.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/sedowas.pdfIn PDF document text
    • http://dasanurarad.epizy.com/control_systems_engineering_notes.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_off00011612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11612 5480 bytes
SHA-256: f225b1af4f151133c2989533e8cd6b3af9803ed51dcfc93b7adf595c31103b90
font_01_sfnt_off000128b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128B5 11268 bytes
SHA-256: 03b63c56d529a5b6024eddb5fbaee4c60b25ab8acad6eca1e67b51141082ee34

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