Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1aa33d7fe7dcf5d…

MALICIOUS

PDF

83.4 KB Created: 2021-02-02 21:58:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cab07b2f6954b9c866923e87f5a88d6f SHA-1: 1a9e256d6067bec9401641f7e4b6885fa1c8c901 SHA-256: e1aa33d7fe7dcf5d83568693697d6b71ec75567e4701bd8388bdd4be9ecdc84b
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://baarspo.ru/wb?keyword=idle%20miner%20tycoon%20beginner%20guide PDF link annotation
    • https://wudigunufite.weebly.com/uploads/1/3/4/6/134611509/navelaxo.pdfIn PDF document text
    • https://nonaparipito.weebly.com/uploads/1/3/4/2/134265999/kuvuwisatiwebizu.pdfIn PDF document text
    • http://trenolgia.buzz/iphone_12_mini_review_gsmarenaungqb.pdfIn PDF document text
    • https://fewurigog.weebly.com/uploads/1/3/0/9/130969621/folufogoratuf.pdfIn PDF document text
    • http://questotzvezd.space/tarihi_evre_koruma_ve_restorasyonwdbkd.pdfIn PDF document text
    • https://xewidepomizexas.weebly.com/uploads/1/3/0/7/130775014/rewusatodoka.pdfIn PDF document text
    • http://obschee.xyz/xaloxofofasb3nn.pdfIn PDF document text
    • https://susominen.weebly.com/uploads/1/3/4/7/134714937/nesaj.pdfIn PDF document text
    • https://tuxakosubulep.weebly.com/uploads/1/3/4/0/134012578/fejun-subapo-loguvopugod.pdfIn PDF document text
    • https://tabureribe.weebly.com/uploads/1/3/0/8/130813037/luxulogizeguzin.pdfIn PDF document text
    • https://fakanodadix.weebly.com/uploads/1/3/4/3/134371587/pukakabavugonoge.pdfIn PDF document text
    • https://sigojexubaj.weebly.com/uploads/1/3/2/6/132682800/bc131aa521b625.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/ganubatebedoxez/matte_black_wallpaper_hd_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/vabebufevuduxipam.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/free_printable_recorder_sheet_music_for_beginners.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_off00010b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B8C 5052 bytes
SHA-256: 84b9b63fdaeb26a03fd1d58f8dd02fa6c9e4ea97fa373b7f939c5ba14420de5b
font_01_sfnt_off00011cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAE 10600 bytes
SHA-256: 449312611ab8797c4d79313383af42e8fbc2156c09760d4337d2f5edef751e76