Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae684cd438a8c16…

MALICIOUS

PDF

66.2 KB Created: 2021-02-28 00:37:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 91b0f22923319e97ae19dc4765b38a42 SHA-1: e9a6ce712e244383ce3554e80af884cc95e3c5c2 SHA-256: bae684cd438a8c168b79f7e09665abfc0e8952e64a3f9add4c3137060ee9ca7b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://baarspo.ru/wix?keyword=bill+nye+the+science+guy+populations+video+worksheet+answers PDF link annotation
    • https://nusutaligufobam.weebly.com/uploads/1/3/5/3/135393176/e71561baa3301.pdfIn PDF document text
    • https://bavopasivivewid.weebly.com/uploads/1/3/0/7/130738836/korabujekufixewu.pdfIn PDF document text
    • http://mon-cmbretagne.best/5904842973166dgx.pdfIn PDF document text
    • http://zemimumaloger.iblogger.org/photoshop_blur_brush_free.pdfIn PDF document text
    • https://torevoxun.weebly.com/uploads/1/3/2/7/132712334/melivefuzez_buledilopu_tasojif_morulupobabenag.pdfIn PDF document text
    • http://lupepujalin.iblogger.org/takuniturox.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/age_to_get_a_drivers_permit_in_new_york.pdfIn PDF document text
    • http://funogager.22web.org/mikimanuradumowixurufufo.pdfIn PDF document text
    • https://wesaxewotivaf.weebly.com/uploads/1/3/4/5/134578523/9802741.pdfIn PDF document text
    • http://lixorajepidil.mygamesonline.org/what_is_a_battery_float_charger.pdfIn PDF document text
    • http://puwonasomoso.22web.org/93342082830.pdfIn PDF document text
    • https://gagavupotiwek.weebly.com/uploads/1/3/0/8/130813998/tofadotutamoro_fipijemonel_nogeburagedu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://loxosufodu.epizy.com/advanced_information_technology_solutions.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/what_is_the_best_samsonite_luggage_to_buy.pdfIn PDF document text
    • http://pajuniwosedi.rf.gd/skullcandy_barricade_xl_not_charging.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_off0000c648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC648 5700 bytes
SHA-256: 83086bc1a54d8cae8d17ba1c379d0f023cfeab3d0c5d24f8ace19c3d0ab4b850
font_01_sfnt_off0000d9cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CC 9856 bytes
SHA-256: 73c8586a44b3a91172204b6c236aba6a9c407a93f4e6ec3031cedd25936a2067