Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dac0760e98025bf…

MALICIOUS

PDF

79.4 KB Created: 2021-05-04 06:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: cd151da30ef6283b7faf09d3b6bc4286 SHA-1: e86b20e6519969f552b9c78bb3e54187dfbb57fc SHA-256: 0dac0760e98025bf09b114f7d84a90d61f60de037eaa11f178a47c4f456d8380
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain (`botokaw.ru`) that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain product-related keywords, suggesting a lure to disguise the malicious links.

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://botokaw.ru/strik?utm_term=schwinn+fitness+230+recumbent+bike PDF link annotation
    • http://rewokujow.scienceontheweb.net/76647017809.pdfIn PDF document text
    • http://jimubezisu.iblogger.org/histologa_del_pancreas.pdfIn PDF document text
    • http://nuraner.iblogger.org/nokutunowefivotekufe.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/ozone_500_mountain_bike_24_inch.pdfIn PDF document text
    • http://4gusevshop.space/logeronabogedduq8o.pdfIn PDF document text
    • http://nafewid.sportsontheweb.net/b._com_1st_sem_kannada_text_book_2020.pdfIn PDF document text
    • http://freshmind.net/62704126708v7jdj.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/aminoven_infant_10.pdfIn PDF document text
    • http://thedouche.xyz/864284316718ndx6.pdfIn PDF document text
    • http://kuxogajow.iblogger.org/esl_english_worksheets_printable.pdfIn PDF document text
    • http://callipakk2.site/quran_android_app_reviewsaqdpl.pdfIn PDF document text
    • http://sayseedokg.com/700375933533j4qv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5b3a2631-baab-4d1f-8161-183aa5bfd7a2.filesusr.com/ugd/5dc2b7_7368a9cd49074dbe8869e11b97174ea1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e69d98f-3c01-4923-8721-9bfb70b23411/dagafekapamawab.pdfIn PDF document text
    • http://jamenajiko.myartsonline.com/attestation_de_prise_en_charge_visa_tudiant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f52fde6b-9c4d-4f24-9b4d-29f893cd3638/is_7000_pounds_a_lot_of_money.pdfIn PDF document text
    • http://desejole.myartsonline.com/building_bye_laws_nepal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad77f0a7-6faa-42a1-bbdc-7c36bb2662bb/al-bayan_fi_tafsir_al-quran_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b8def63-88bf-4c91-aa90-47e4b59c21c4/what_are_the_different_types_of_organizational_structures.pdfIn PDF document text
    • https://3ced707c-20bd-49bb-93f1-edb15be4e391.filesusr.com/ugd/e90305_3eb71f701bef4cca89d0290c774f4a45.pdf?index=trueIn 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_off0000f756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF756 5716 bytes
SHA-256: 1328db1a0a3b73737e4f3a716a99516d41a76d8e57a515065b68749c108011ee
font_01_sfnt_off00010ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC1 11136 bytes
SHA-256: edc277961fd483a1c4d14a9764cccc986285faec664145f1159df8df6861abb1

Open this report in the interactive analyzer, or submit your own file for analysis.