Malicious PDF — malware analysis report

Static analysis result for SHA-256 98917955513b9302…

MALICIOUS

PDF

74.9 KB Created: 2021-03-23 03:29:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2ce082e1490648b78b09321e76b2a1d1 SHA-1: 997d62f191af7db75135575d53c1277e0a8c6019 SHA-256: 98917955513b9302e5aa85eb1ec0ae099d37d68d93b31d0acd108f68a85ec2f0
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to a product listing, likely to trick users into downloading further 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://golowaki.ru/strik?utm_term=delonghi+de8217+longhi+nespresso+lattissima+touch+white PDF link annotation
    • https://cdn.sqhk.co/wotedimozer/aUahchC/bluetooth_app_for_my_pc.pdfIn PDF document text
    • http://getyourscore.info/75413452655njx21.pdfIn PDF document text
    • http://datinge.site/nafofidiferidatc7nm4.pdfIn PDF document text
    • http://zivemigidefis.mypressonline.com/organic_chemistry_formulas_download.pdfIn PDF document text
    • http://zerkalo-fugicar.website/real_gangster_auto_crime_simulator_2020_apk_download3r5i6.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekasip/WjjTrhh/xesun.pdfIn PDF document text
    • http://gogadozuxigode.iblogger.org/myocardial_infarction_2020.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/myron_mixon_rib_sauce_recipe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lezebotetojezaz.epizy.com/dumisiloserevodam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b7f402-beb8-49c0-bb82-8bc7c74f9ec3/rusuronozufanibafako.pdfIn PDF document text
    • https://8c4778c4-ed17-4cf1-86f9-5448e21c5c15.filesusr.com/ugd/6da380_bd6c81b380ba4bdeb439f50954ddc28e.pdf?index=trueIn PDF document text
    • https://e5eb5b25-b33c-43e3-82d5-57ab1bf863d8.filesusr.com/ugd/b0c717_5398f4197f6d4fdabcdf5a890299e9c1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f086655-60ed-4102-b507-c619d18270c2/microsoft_flight_simulator_x_vr_support.pdfIn PDF document text
    • https://665985ba-8e9f-4173-b993-17a3090d61d7.filesusr.com/ugd/08421c_437ad5813d67423894a34e0a633d991c.pdf?index=trueIn PDF document text
    • https://7e073981-ad1c-4081-8dc0-76946ba36063.filesusr.com/ugd/c4f63d_fded2a28a0f14a2f9ab44be04b88e4cc.pdf?index=trueIn PDF document text
    • http://lugivodunoxasi.atwebpages.com/29299163251.pdfIn PDF document text
    • http://gototura.myartsonline.com/2013_subaru_wrx_sti_engine_specs.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_off0000e30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 6036 bytes
SHA-256: bf7ca5a896fce3682ff41699859f4ce58db140d88b94277dffbc13341551f89f
font_01_sfnt_off0000f78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78C 11400 bytes
SHA-256: 6ec1a588bbe886ec80d06bd6d3cb5f312cad5d2bcc8841d29e30594bcaf20576

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