Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ec1b70dc8c5506…

MALICIOUS

PDF

79.4 KB Created: 2021-02-19 16:32:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2f17177531df37b3315ab58fffafc599 SHA-1: f474b81e29450f0630ee65d26eb578dd89c8cb10 SHA-256: a0ec1b70dc8c5506707e357469ff85d49a69c117e521ebd9b78c39cdedf6aba7
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://maypoin.ru/wb?keyword=shark%20steam%20mop%20manual%20s3101 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424630/normal_5fda324ea1dc3.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/jfuhehi/stickman_dismounting_2_hack_apk.pdfIn PDF document text
    • https://zipusuborulam.weebly.com/uploads/1/3/0/8/130814510/dujezopabozew-dikoxodudaba.pdfIn PDF document text
    • http://ellmax-site.xyz/404302859287zx4p.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/gffAyJo/42227274722.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380083/normal_5fcc0e6a3244f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_601f140dde665.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/webusiweb_sexideteru.pdfIn PDF document text
    • https://cdn.sqhk.co/timafewa/4Hgehaw/polidefetemoxezirem.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/cgeJkie/toddler_swallowed_bouncy_ball.pdfIn PDF document text
    • http://igbusinessabouthelp.com/doxumirakebupupozasuy8lr.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/advanced_english_vocabulary_wordscmm6x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502436/normal_5ff0cc8bef3c1.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/regufojalojaza/kathi_tamil_movie_free_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/ditokudi.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_off0000f982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF982 5584 bytes
SHA-256: 0576a16c872e0ad24a886c1994ab62e53d1f04ec6cff4acb1fae05d8a7bb22b0
font_01_sfnt_off00010c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C56 10820 bytes
SHA-256: 2738ac134bae4597d19aea802c9c6fa7f6ee7b1e219164d8b4a785929f175d41