Malicious PDF — malware analysis report

Static analysis result for SHA-256 b716018c8e22e85c…

MALICIOUS

PDF

70.5 KB Created: 2021-02-16 10:43:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fecea3c52232ecffd9995c35ca8c9983 SHA-1: 92ee052e97682690a148cba9437598ec80065761 SHA-256: b716018c8e22e85cc163a763288f62d23262c2c15e1d2b01e5567f9a8e5596ae
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wb?keyword=present%20perfect%20worksheet%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412891/normal_5fe0a834273c4.pdfIn PDF document text
    • http://jofefipibabalul.22web.org/pepe_twitch_emotes.pdfIn PDF document text
    • https://tinonerapize.weebly.com/uploads/1/3/5/3/135349756/8e7600a3.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/0ge1jjW/gesojiwunevafagob.pdfIn PDF document text
    • https://cdn.sqhk.co/mepejuwaj/aWvnhP6/proxima_centauri_planet_orbit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470825/normal_60183050dc1c1.pdfIn PDF document text
    • https://jexesatarufo.weebly.com/uploads/1/3/1/4/131437655/fapinape-vunaju-xumunux.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/riiciiS/mowojakenevadozas.pdfIn PDF document text
    • http://slmit.space/continuity_and_differentiability_homework_answers7jmgr.pdfIn PDF document text
    • https://telejifuzi.weebly.com/uploads/1/3/5/3/135313468/xipafoz.pdfIn PDF document text
    • http://kengoru.space/canon_eos_750d_manualches0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magonusu.epizy.com/lorewesux.pdfIn PDF document text
    • http://lewamomad.epizy.com/npt_vs_bsp.pdfIn PDF document text
    • http://livixow.epizy.com/7768745823.pdfIn PDF document text
    • http://zufagubiles.epizy.com/business_name_registration_ontario_form.pdfIn PDF document text
    • http://wowadowir.epizy.com/equitone_installation_guide.pdfIn PDF document text
    • http://vabagez.rf.gd/29031484574.pdfIn PDF document text
    • http://batawovajupofu.rf.gd/always_korean_movie_in_english.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_off0000d789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD789 5156 bytes
SHA-256: 2fffb655517dfc01e7e6b36e298e2a49cf4ada43a37f4fa21653740d8d8af9c0
font_01_sfnt_off0000e927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE927 10524 bytes
SHA-256: bffe2f153ce7feabd2e3f813af3cc6f1b17b6b6e3494660a60e8235f2812f6a5