Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c675e9e5fe2ec83…

MALICIOUS

PDF

68.5 KB Created: 2021-03-09 03:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0694aafb1e8f8387c834364ec5930604 SHA-1: 6d668dd500948c7f02300c63908db109ffb01f69 SHA-256: 1c675e9e5fe2ec8310b9eefa086fbb9c52f290e6181d2d7f2f7975aef1da3b35
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/award?keyword=uses+of+computer+network+pdf PDF link annotation
    • https://xuvivodoxanujo.weebly.com/uploads/1/3/5/3/135308848/boveka.pdfIn PDF document text
    • https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/jivawagafaj.pdfIn PDF document text
    • https://mefixakiderix.weebly.com/uploads/1/3/4/3/134319494/malusew_fodezizazu.pdfIn PDF document text
    • https://bumogekatagod.weebly.com/uploads/1/3/0/7/130776321/97770b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b83ee94-cdff-4dc7-9d73-76c9ddbe2901/litadubixiseworupuzus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f943a2d3-5096-4241-9031-63333e59f527/13810045756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53ffb67f-e73e-4183-a67a-e0094d29ab21/they_say_i_say_4th_edition_ebook.pdfIn PDF document text
    • http://jifusewu.epizy.com/most_important_balance_sheet_ratios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e14700e-3635-44be-9e4f-1fad1d5bb7aa/73162529301.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/rotutiligonulugoniwuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/523ac5da-a6b2-4e2d-91be-534f097824d4/how_to_put_sim_card_in_alcatel_one_touch_flip_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/287b4e42-8f7e-4698-97e6-16a8d5f1f2f0/56936423336.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/52397881975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c61149d3-1cfa-4a37-8283-fac6d7789c07/fodiboduj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd04f44e-938c-4c5a-aaca-dcb09fb66bb4/irobot_roomba_677_replacement_parts.pdfIn PDF document text
    • http://kivekogifix.epizy.com/jiluxuwanejadonodeped.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_off0000d1a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A4 5204 bytes
SHA-256: 5b00fd928384eed73d46bc8e4a8bff0c648c9f4230effeb6400237cc08269b8a
font_01_sfnt_off0000e363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE363 9664 bytes
SHA-256: 6064b2e4a1a5c8a1dd396827ff13ee9d34f5bf8663e4f8c80ea49bbfe3474ce4

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