Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffee3fab35c0e113…

MALICIOUS

PDF

79.4 KB Created: 2021-03-05 17:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: af5738ce901ce38790885a190e79a2be SHA-1: 83cfb3e60b4e9b0f6057d74d74c1b9ba5f5bacd3 SHA-256: ffee3fab35c0e113c090b4162c23c8021ea2fe186fc6b59b5bcbc2b91bcecddb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/wb?keyword=tecumseh%20engine%20oil%20recommendations PDF link annotation
    • https://javagakikidubat.weebly.com/uploads/1/3/0/9/130969576/duledutomudeloj.pdfIn PDF document text
    • https://lividuxu.weebly.com/uploads/1/3/4/3/134354071/5a705269.pdfIn PDF document text
    • http://vk-settings-change.online/3479252034909jdr.pdfIn PDF document text
    • http://zulamulowegus.iblogger.org/pencil_drawing_images_flowers_download.pdfIn PDF document text
    • http://regetun.22web.org/28819066436.pdfIn PDF document text
    • http://fivogudog.iblogger.org/44924689417.pdfIn PDF document text
    • https://birifukuko.weebly.com/uploads/1/3/1/4/131453348/c398cc5616c698.pdfIn PDF document text
    • https://kexezesokofu.weebly.com/uploads/1/3/3/9/133986719/sudovigeremanupi.pdfIn PDF document text
    • http://usacreditmonitoring.info/rinawedihgpo4.pdfIn PDF document text
    • http://wefabawatewe.22web.org/thorie_des_avantages_comparatifs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tagugatukosag.epizy.com/aadhaar_mobile_app.pdfIn PDF document text
    • http://fifusudevop.rf.gd/biharwap_in_hd_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/givinipaxeniwaf.pdfIn PDF document text
    • http://rasunafosav.epizy.com/78493135480.pdfIn PDF document text
    • http://lukoleni.epizy.com/zujusigozebubisafadulu.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/starboard_software_free.pdfIn PDF document text
    • http://jemaloweveja.rf.gd/sony_ht-st5000_factory_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/annual_leave_application_form_format.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_off0000fa9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9F 5300 bytes
SHA-256: 0ee4c06311a38ff586531d3657eb4cbf7534e70a9052b16c9eb66ad62dbe2479
font_01_sfnt_off00010c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C76 10652 bytes
SHA-256: 2d12b9c1ea08a37343cd7dd3634b5923a6f02d648c8156f84a0ed20cf5099f8a