Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c52d28f35a1a4a…

MALICIOUS

PDF

72.2 KB Created: 2021-02-18 21:04:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2c0e68579f721b63ceaa19d25ce4e613 SHA-1: adb5b251a09f500b680e2b91a667a2dbd0f867fc SHA-256: 57c52d28f35a1a4a7287fd98dd829eb33cec020f391ffe87ccd1d865150741a2
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/123?utm_term=britax+marathon+expiration+date+canada PDF link annotation
    • http://devlp.club/wintv_v10_activation_codeujern.pdfIn PDF document text
    • https://cdn.sqhk.co/wukibezoso/dghiih6/divizipasajarajodusogodi.pdfIn PDF document text
    • http://trendmobile.ru/muslim_couple_images_freegvd0g.pdfIn PDF document text
    • http://1xbets-regs.site/reading_practice_for_toeflp6o4w.pdfIn PDF document text
    • http://artistichomesolutions.com/gukirekepabarabamtkqtf.pdfIn PDF document text
    • http://jakartapro.xyz/jovukolekidowo7fcn.pdfIn PDF document text
    • http://bigno.space/dukunojijutodadap8mui.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/icje0jh/carrageenan_safe_for_cats.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/hegPidi/biperepisaralaxu.pdfIn PDF document text
    • http://itfamily.info/gerund_phrases_practice_worksheettmwwd.pdfIn PDF document text
    • http://com-copyrighit.com/supreme_wisdom_bookj1box.pdfIn PDF document text
    • http://neyroskakalka.site/islands_in_the_stream_remake_20188p2zv.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/jgjgham/let_s_create_pottery_2_quest_65.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/nilafafakem/41217912478.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/android_detect_back_button_in_fragment.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_off0000df77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF77 5220 bytes
SHA-256: 1a46ea44a93596395616441fac5f3982193fad07ea78e1831e24876c0455e7b1
font_01_sfnt_off0000f116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF116 10184 bytes
SHA-256: bab7e6a7bad07a186da3f032987911acf0d86c109c3e024404fed41b64260245