Malicious PDF — malware analysis report

Static analysis result for SHA-256 453c44ab843760b6…

MALICIOUS

PDF

70.1 KB Created: 2021-03-03 14:03:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 819e602311f322e2e9d6e29825dde5b3 SHA-1: 21891070077aa8c59931f90e856fe35f1e7a9c17 SHA-256: 453c44ab843760b6b291bb42c5804fdc85cd7f57a22e57c00004c916e44ba72f
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://fokemale.ru/wix?keyword=nerc+study+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470979/normal_5fceb8805aa8a.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/d055e8ea.pdfIn PDF document text
    • https://fupigipefixoxom.weebly.com/uploads/1/3/1/3/131379213/9057951.pdfIn PDF document text
    • http://sibuvre.com/niwevunevoviwiratowotipajjs4n.pdfIn PDF document text
    • https://mavezuwunokil.weebly.com/uploads/1/3/4/6/134627141/b2a0ce2da724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489713/normal_6035102f1d4d8.pdfIn PDF document text
    • https://zumaboletafu.weebly.com/uploads/1/3/1/4/131454272/cbc15aefa2fcbbc.pdfIn PDF document text
    • https://rowopubogapog.weebly.com/uploads/1/3/4/2/134234702/2507037.pdfIn PDF document text
    • https://dixawofira.weebly.com/uploads/1/3/5/3/135303501/rixorotozabarunutib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448547/normal_60064bdb916f8.pdfIn PDF document text
    • https://tafanoxuxirugo.weebly.com/uploads/1/3/5/3/135327873/642fd0c17c49a11.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/zatasipezeg/class_attendance_google_sheets.pdfIn PDF document text
    • http://vesedakowata.onlinewebshop.net/citizen_drive_from_eco-drive_ladies_rose_gold_tone_strap_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/how_to_change_epr_setting_on_resmed_s9.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/tetosen.pdfIn PDF document text
    • http://pekafujojef.onlinewebshop.net/beretta_a300_outlander_semi-automatic_shotgun_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/du._sol._ac._in_date_sheet_2019.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_off0000d1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FA 4936 bytes
SHA-256: deeeb7f114c775b6bd9b71031510968db7557068eed3742e98cd22750ab3b39a
font_01_sfnt_off0000e2e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E8 12512 bytes
SHA-256: 5d5d7d1456599d6dbcad4064fb37f1043970f560fc2a2eb9d4daf1092e715fb1