Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa66d56c529f6dd3…

MALICIOUS

PDF

73.1 KB Created: 2021-03-04 13:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 616858ffb6db4321f8930b8555d52686 SHA-1: 900d4c61d5aaca85d672e3f97c28e21a94517cba SHA-256: aa66d56c529f6dd3c7c6aa46a57833ce3370378d3f264721fc18a5f91298ad61
126 Risk Score

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/award?keyword=alice+in+wonderland+setting+extract PDF link annotation
    • http://waferaboteb.mypressonline.com/second_order_derivative_important_questions.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/62205442968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403951/normal_5fd8b34d36495.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/hetge4U/the_big_dipper_crossword_clue_6_letters.pdfIn PDF document text
    • https://cdn.sqhk.co/mixenezir/ggvsERJ/the_lymphatics_of_the_upper_extremity.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/orange_inheritance_book_1.pdfIn PDF document text
    • http://vurovolapoza.mygamesonline.org/how_to_use_a_78_card_tarot_deck.pdfIn PDF document text
    • https://cdn.sqhk.co/solalokazili/gTjgZjf/speedway_masters_2_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/fFrijic/79095334203.pdfIn PDF document text
    • https://cdn.sqhk.co/tafolaku/ggTIbZM/vekakafinedonuxorifekaw.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/chicco_lullaby_baby_playard_setup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/douglass_speech_what_to_the_slave_is_the_fourth_of_july.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72afef55-3814-47fc-afd1-49318e17c420/28627205213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68a2ea3a-d7a0-4030-bec0-25c927ddf273/5626326096.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/lekifo.pdfIn PDF document text
    • http://vowojuxibaxo.myartsonline.com/liwotonud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d5a90b-2e16-4f27-9612-e06b2a41dce4/how_to_use_safety_1st_humidifier.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/how_much_does_a_certified_financial_advisor_make.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_off0000e25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25B 5256 bytes
SHA-256: 6f6583838b544a6be0de7a0115c4842e466ee0b1966aa969dfa56cfad8127537
font_01_sfnt_off0000f45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45C 10208 bytes
SHA-256: c04f1a62e356be802027aaeef415da77dfe355d1890037a53753731db94059b8