Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f961f7fc30e9e97…

MALICIOUS

PDF

66.4 KB Created: 2021-02-25 04:33:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1bfc7aff315e5f8df79bf39d8ba846b7 SHA-1: ae925d81cda002d3503694bc4f753b0e0b438862 SHA-256: 3f961f7fc30e9e975e47823755e5991c491a0c89b69603641b585ec42177e93e
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=how+to+make+money+in+stocks+amazon In PDF document text
    • http://fazejajogavu.medianewsonline.com/bixetedotemowaxuriv.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/54249328721.pdfIn PDF document text
    • https://pijetupuz.weebly.com/uploads/1/3/4/3/134351396/9739104.pdfIn PDF document text
    • https://zorovapi.weebly.com/uploads/1/3/2/3/132303286/gakoxado.pdfIn PDF document text
    • https://sixevajerav.weebly.com/uploads/1/3/5/3/135341720/6306500.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/25cdc5438e7.pdfIn PDF document text
    • https://dadekubezaxinis.weebly.com/uploads/1/3/2/7/132740399/2179833.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/B7ohf9Y/mortal_kombat_movie_1995_full_movie.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/8396349.pdfIn PDF document text
    • https://lividuxu.weebly.com/uploads/1/3/4/3/134354071/mokuviparix.pdfIn PDF document text
    • https://cdn.sqhk.co/zamodozitip/jbjcYMI/double_masters_draft_booster_pack.pdfIn PDF document text
    • https://befadileniralan.weebly.com/uploads/1/3/6/0/136082268/9363474.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiluxusimutine.atwebpages.com/83238375998.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/38254571016.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/fishing_line_setup_for_saltwater.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/sungrow_20kw_inverter_data_sheet.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_off0000c881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC881 5088 bytes
SHA-256: 2062c40a5022289c087f9e34aeebc61fac5eecbd428d7f37e43b7fb6422cd953
font_01_sfnt_off0000d9da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9DA 10140 bytes
SHA-256: 0e3e8b599e9296a53113f3408166f2c9674865615fbe096f48242394d15e01e8