Malicious PDF — malware analysis report

Static analysis result for SHA-256 788c97f8d99b7409…

MALICIOUS

PDF

69.9 KB Created: 2021-03-04 11:31:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 17f2b0c5d6dbbb3d6baf651cbfa6aedf SHA-1: 108653e301b06a83004a55a43a053e4b5bf9f637 SHA-256: 788c97f8d99b7409f8a4f1660220ade85edc79e86658d596aec63d031f1795d2
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/wix?keyword=lyft+apk+mirror PDF link annotation
    • http://kitigaw.22web.org/antioxidant_activity_of_apple_peels.pdfIn PDF document text
    • http://wiwovurezibaso.getenjoyment.net/nikon_speedlight_sb-600_will_not_turn_on.pdfIn PDF document text
    • https://vaxurubezinijor.weebly.com/uploads/1/3/4/6/134690270/sijatig_mejemo_kafaluzewupubo_nabakagusafume.pdfIn PDF document text
    • https://ruxibini.weebly.com/uploads/1/3/2/6/132680870/4c646.pdfIn PDF document text
    • http://potenciy.xyz/logo_designer_app_for_android0y90h.pdfIn PDF document text
    • http://wonnaturila.space/bombas_socks_womens_price54dso.pdfIn PDF document text
    • https://ritojajugub.weebly.com/uploads/1/3/5/9/135984917/bunakupusi.pdfIn PDF document text
    • http://nijibegosovatiz.iblogger.org/instagram_video_er_online_iphone.pdfIn PDF document text
    • http://orbitan.fun/91301788455y359w.pdfIn PDF document text
    • https://toverumu.weebly.com/uploads/1/3/0/8/130815437/zoxixagunev-ropajariwagel.pdfIn PDF document text
    • http://wiinorama.fun/hatha_yoga_sequence_sadhgurue17yt.pdfIn PDF document text
    • https://gimisezijumini.weebly.com/uploads/1/3/1/4/131453276/19a3d47d3fb0f72.pdfIn PDF document text
    • http://feremujidonigu.getenjoyment.net/pofagewubonu.pdfIn PDF document text
    • https://petenugilamabo.weebly.com/uploads/1/3/1/4/131453278/7d0f988b5a66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixarewujedel.atwebpages.com/2002_ford_explorer_xlt_transmission_dipstick_location.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_off0000d661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD661 4944 bytes
SHA-256: 0476d4e857322cad896d3c76250bfe159043c50d1836dc88be749732d2b49b0b
font_01_sfnt_off0000e734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE734 10380 bytes
SHA-256: bf0bb895f1a5c3f4ec1ae33aac20464f2287f2d4929a7af6336b75f446ed5cbc