Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dc1b22b2956ce01…

MALICIOUS

PDF

73.1 KB Created: 2021-02-11 16:52:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ce8cd4ec749263fa889bf5959cd98ac4 SHA-1: 216ebc23adee9ab561981fafffe0d2fa198eca09 SHA-256: 8dc1b22b2956ce018fa9d28208994f863599d53819254434501111b051992a17
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://maypoin.ru/wix?keyword=magisto+video+editor+pro+apk+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448733/normal_5fec2ed57032f.pdfIn PDF document text
    • https://lanapovo.weebly.com/uploads/1/3/1/4/131437145/bulunululeva_pewepumolujaw_kejedurebatasu_lepetitu.pdfIn PDF document text
    • https://sukorajonivo.weebly.com/uploads/1/3/4/1/134108587/zodowewebabugo.pdfIn PDF document text
    • https://lirefabagobaxi.weebly.com/uploads/1/3/4/0/134012393/nurimugi.pdfIn PDF document text
    • https://dorenezawux.weebly.com/uploads/1/3/5/3/135383086/xitir.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/Fjjmmge/9381652285.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500911/normal_5ffa2812440bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469827/normal_5fd662ea6b72c.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/uhaje6Q/vunololom.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/muwemivumazulax/58880035071.pdfIn PDF document text
    • http://fanixagef.rf.gd/cullman_power_board_report_outage.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9D 5348 bytes
SHA-256: 146ac39c7342cc9d78728d1e4dc4ea26d334390e65d5d29a2fe8397efa295684
font_01_sfnt_off0000de03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE03 10516 bytes
SHA-256: f8478ff85cbe3bbfc03ac2d2a80d85fe7db69bd4a30cad48baf52166dd8259b8
font_02_sfnt_off00010246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10246 16204 bytes
SHA-256: 4224c139fdc5eb4d8d2f8f91bfbf26f5e1d5856c4fe14b992c7840fd4fd56b98