Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dfc2084d325eaaa…

MALICIOUS

PDF

61.6 KB Created: 2021-02-15 22:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3726aa41f9d62364cb3ad0a44dcb89ba SHA-1: 5e95958c37eb858030e72ccf01a366a4a1c6a2b4 SHA-256: 7dfc2084d325eaaa8971a0f04d30bb2eae546774a8a8aec637ce55a6f3a08210
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://druttle.ru/wix?keyword=glencoe+science+biology+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4496381/normal_6016d36289c00.pdfIn PDF document text
    • http://nibatuw.iblogger.org/rajasthan_bsc_nursing_entrance_exam_form_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/fegojujor/fBp9SaT/riverside_drive_macon_ga_restaurants.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452386/normal_601bafb70a533.pdfIn PDF document text
    • http://skout.tech/diabetic_foot_ulcer_guideline_malaysia2zs5q.pdfIn PDF document text
    • http://bidovanuketere.22web.org/analogue_clock_widget_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373527/normal_60269952418a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wivowutone.epizy.com/how_to_start_stihl_bg56c_blower.pdfIn PDF document text
    • http://bukinajomo.epizy.com/td_ameritrade_ira_withdrawal_form.pdfIn PDF document text
    • http://lasiratiguguro.rf.gd/birifawiridikexegamawu.pdfIn PDF document text
    • http://bevamixebigal.epizy.com/coping_cat_workbook_free.pdfIn PDF document text
    • http://bodagoge.epizy.com/felogememed.pdfIn PDF document text
    • http://wuxodevidupibe.epizy.com/80966961816.pdfIn PDF document text
    • http://fikexole.rf.gd/66864979069.pdfIn PDF document text
    • http://rolaxaja.rf.gd/xisufafoluriwilikop.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_off0000b570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB570 5488 bytes
SHA-256: 5eb4f6dc3042442a063f8baf549055cbde628c5dad8cec626515fa912b2a2cb5
font_01_sfnt_off0000c833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC833 9724 bytes
SHA-256: f403da9222987d94a5139907e4e2a2aecb1eba6ba9a0bad5611ebdf740d9ed88