Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a8f8170b8ba7090…

MALICIOUS

PDF

76.1 KB Created: 2021-03-18 01:04:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 8982824a44171bfbb196b087243fa389 SHA-1: 59f0efc7d1683dcdf65ede55680e7ece93acb3c3 SHA-256: 0a8f8170b8ba7090ee5510b1f7d838fcae38b81ffdf1d18724c5b8ada0a79145
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing lure. One URL, 'https://fokemale.ru/wb?keyword=what%20is%20cisco%20dta%20170hd%20used%20for', appears to be the primary destination, likely serving as a phishing or malware distribution page. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/wb?keyword=what%20is%20cisco%20dta%20170hd%20used%20for PDF link annotation
    • http://naxaliref.iblogger.org/what_are_some_examples_of_conflicts_of_interest.pdfIn PDF document text
    • http://fortysgjdk.fun/why_wont_my_gas_fireplace_pilot_light_stay_lit1lhbm.pdfIn PDF document text
    • http://fanutoragozogow.sportsontheweb.net/luwirowifamibulatasekun.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/acca_jobs_in_dubai_for_pakistani.pdfIn PDF document text
    • http://trelon.fun/neumonia_neonatal_20187ydzc.pdfIn PDF document text
    • http://tazanup.mypressonline.com/mabok.pdfIn PDF document text
    • http://vixegoxufareka.getenjoyment.net/10137729762.pdfIn PDF document text
    • http://wildboost.club/get_apk_market_app_freegobgs.pdfIn PDF document text
    • http://tryporte.xyz/how_to_become_a_cat_veterinary_specialistbdeg9.pdfIn PDF document text
    • http://expressvpn.store/wiat_iii_qualitative_descriptorsbdbh0.pdfIn PDF document text
    • http://hangzhoumetal.ru/thomas_calculus_11th_edition_solution_full_book_free_download8bvq8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://betupaxomivokab.epizy.com/97178153500.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c823645f-b00d-4414-8a6c-3cb277f22eb7/51267750140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e5d6ca6-260e-4179-b4cc-75c338fbf6fa/95625168191.pdfIn PDF document text
    • http://waruzav.epizy.com/change_outlook_exchange_password_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/255f7d45-9076-4c9f-9bc5-a86403991b03/fawazavixinumagubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03cdd6cd-8a18-4969-b88e-1df37285fcf2/family_feud_ps4_trophy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fd88401-a59a-4699-b42a-33abbadb7b68/19941480419.pdfIn PDF document text
    • http://welidigukiru.epizy.com/34942539140.pdfIn PDF document text
    • http://netuvorib.epizy.com/82915912288.pdfIn PDF document text
    • http://tavamikilav.myartsonline.com/que_es_el_liderazgo_transformacional.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC46 5140 bytes
SHA-256: b44eec42ee22a481b537cd2751cc54c84fbb439d4d83e8ec99140c5147e93643
font_01_sfnt_off0000ede3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE3 11236 bytes
SHA-256: d0f1d5fe9b870e874c060fbf0ecced8489a58cdca23b7438841c10e27b008caf
font_02_sfnt_off000113a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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