Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac8c1d052cca1284…

MALICIOUS

PDF

66.0 KB Created: 2021-02-07 16:21:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 1f565cc32eac14c8a4ee6d9ffc5688bd SHA-1: 6db4274c91e8b4e962a8c30692a2f75b4b2f3263 SHA-256: ac8c1d052cca12845f026916828cefc20cf781f15a5cf14fce1c35411609771b
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://leonvi.ru/shook?utm_term=ps4+rock+band+guitar+clone+hero PDF link annotation
    • http://copyright-supporthelp.com/93091152483bqxgz.pdfIn PDF document text
    • https://bovaxomasomi.weebly.com/uploads/1/3/1/4/131437143/nobomapuduzuramogez.pdfIn PDF document text
    • http://radanews.site/hanging_tree_piano_sheet_music_easyudq51.pdfIn PDF document text
    • https://xiduzejeg.weebly.com/uploads/1/3/1/6/131606953/wukujun.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/wifevovewuvojidavugianrni.pdfIn PDF document text
    • https://reponobokuwe.weebly.com/uploads/1/3/5/4/135401207/fujovujofaru-sizili-julinaxuni.pdfIn PDF document text
    • https://jarosebat.weebly.com/uploads/1/3/4/6/134695718/sikatamunofu-finimo-vifum.pdfIn PDF document text
    • https://movireralu.weebly.com/uploads/1/3/4/8/134879142/25c6d521b07617.pdfIn PDF document text
    • http://yblda.fun/figurative_language_poem_1_answer_keyqq1xo.pdfIn PDF document text
    • https://dojiladise.weebly.com/uploads/1/3/1/3/131379401/0cf6733a7e082.pdfIn PDF document text
    • http://podarokinsta24.online/no_mirrors_in_my_nana_s_houseuto5w.pdfIn PDF document text
    • http://rocketdocs.us/vinayagar_serial_title_song9x4bu.pdfIn PDF document text
    • https://gososeru.weebly.com/uploads/1/3/4/5/134597059/1eecd.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/litunux/8221933354.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/que_significa_contexto.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_off0000c528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC528 5492 bytes
SHA-256: 0059a6035266cc8b17f8ed8f490dcc0164296b9d6eaf0b4df8b19587b4fc17b5
font_01_sfnt_off0000d7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D8 10360 bytes
SHA-256: f5c616126920434d39e4f3537e7a0aa573adfe9c084f9f8dff42d8574e05851e