Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25aca977bcc80ab…

MALICIOUS

PDF

71.5 KB Created: 2021-02-07 20:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 99caee3e070f2a59ed4c80c6c4a45d7d SHA-1: 0f621f5d3f3194958a685006039d0e3dcbabf625 SHA-256: e25aca977bcc80aba9c8cab1b66456b3b563f0c8f71be138f20245fe72919cb6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://bologen.ru/aws?utm_term=justification+report+latest+utility+2.+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500453/normal_5ff1806ed57ae.pdfIn PDF document text
    • http://tb-films.ru/waxaniwufovoxijujx2nb.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/ejeQoge/furemutifupejo.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/idSvgcr/slice_and_dice_bbq_lawtey_florida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408319/normal_601c6f179b703.pdfIn PDF document text
    • http://bestunew.xyz/places_that_sharpen_chainsaw_blades_near_meodsio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463266/normal_5fd68e6715de6.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/ruxopibo.pdfIn PDF document text
    • https://luzusuzure.weebly.com/uploads/1/3/0/7/130775685/zebimelujirosot.pdfIn PDF document text
    • https://cdn.sqhk.co/zudoputasafe/nBnzhaT/offroad_truck_climb_legends_mod_apk.pdfIn PDF document text
    • https://povurumupun.weebly.com/uploads/1/3/4/8/134884194/todebijivenez.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/3428752.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386336/normal_5fcd0fb72d545.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403960/normal_60093e1882839.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421970/normal_5fd9c1cbde925.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000db2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2F 5264 bytes
SHA-256: 4bbe9d8f226a8606373f0cbfc91f32e2ad259012685863dab9266dd789c0d9dd
font_01_sfnt_off0000ed37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED37 10504 bytes
SHA-256: 758f1fa0a78cc6c3c71291d6e20473b5416cfa40f6b655986bc7bdf21e5464a1

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