Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a709ca099d7ed18…

MALICIOUS

PDF

76.2 KB Created: 2021-02-06 13:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e233a25b1928306bcf6b48d40404f965 SHA-1: dcc5bb90cc1d7ec4f053e6548f22c3f555dae830 SHA-256: 0a709ca099d7ed18ccba45e5b728a1b4a1cf0b5f0613b1ef5ae2dbbbde5bc6aa
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?utm_term=formation+beyonce+traduction+anglais PDF link annotation
    • http://options.expert/5940645237t24zg.pdfIn PDF document text
    • https://lepatoketi.weebly.com/uploads/1/3/4/7/134732542/dufoxuwafinumarup.pdfIn PDF document text
    • https://tafopolen.weebly.com/uploads/1/3/4/3/134396822/8635021.pdfIn PDF document text
    • https://zesaxigupube.weebly.com/uploads/1/3/4/0/134016892/5808431.pdfIn PDF document text
    • https://cdn.sqhk.co/damukowabij/hhhciOW/35105783659.pdfIn PDF document text
    • https://xexibufit.weebly.com/uploads/1/3/0/7/130739933/wasawowamuvi.pdfIn PDF document text
    • https://lexigeme.weebly.com/uploads/1/3/4/5/134524735/0aa9894476dade8.pdfIn PDF document text
    • https://gomujivas.weebly.com/uploads/1/3/5/3/135321586/lemojevisu.pdfIn PDF document text
    • https://cdn.sqhk.co/tajaketo/JjeghA6/liwoxedexerafidarilepaxeg.pdfIn PDF document text
    • https://jetujonupukoj.weebly.com/uploads/1/3/1/1/131163664/xuvedeta_wijoxojomuji_vebega.pdfIn PDF document text
    • http://indir-kazan.com/naruto_shippuden_episode_138_englishzp05g.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/dubiditiginowo/99879940723.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/live_traffic_report_garden_state_parkway_north.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/information_processing_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/danobi.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_off0000ee03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE03 5456 bytes
SHA-256: 96e559c1e09d9c7b2216462d4f5e6e82cde02d628cdeafdef368e3498420de2c
font_01_sfnt_off0001007e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007E 10600 bytes
SHA-256: 450f3acab29305a8bc1ce99868e7d0d04229dc67f8275bf0681813d44f5e6eeb