Malicious PDF — malware analysis report

Static analysis result for SHA-256 3686b4674c319b75…

MALICIOUS

PDF

68.5 KB Created: 2021-03-04 10:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0c7afb9e670cedad0cfc334ca7b1c96b SHA-1: 60166a9a033d1f6c9acc5c97efb8219b961a3ef8 SHA-256: 3686b4674c319b75bb7451b01ac51ed624812c8752d54aef94b9d664b2322ad4
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=calories+dunkin+donuts+corn+muffin In PDF document text
    • https://cdn.sqhk.co/nifodotiriru/4VThhlH/origami_crane_easy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369765/normal_60394b9f52190.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485810/normal_60095a65d43f4.pdfIn PDF document text
    • http://kixiwogazu.sportsontheweb.net/livojuredu.pdfIn PDF document text
    • https://givepatodanino.weebly.com/uploads/1/3/6/0/136097232/2925277.pdfIn PDF document text
    • http://immortal-sho.club/48506752730amyra.pdfIn PDF document text
    • http://jafoxidulez.mypressonline.com/homelite_xl_chainsaw_carb_adjustment.pdfIn PDF document text
    • https://zeduxuvanoripi.weebly.com/uploads/1/3/0/7/130775880/095a058a569d1c6.pdfIn PDF document text
    • http://fanilobepewe.sportsontheweb.net/dd_5e_monster_types.pdfIn PDF document text
    • https://tiketarutuluvo.weebly.com/uploads/1/3/4/0/134042831/kafivaj_desefusopa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452626/normal_5ff82f86ad555.pdfIn PDF document text
    • http://milky-rp.space/commando_2_full_movie_300mb8bn4y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_6011d7963f010.pdfIn PDF document text
    • https://latimemoniborij.weebly.com/uploads/1/3/1/4/131437487/9bd61683.pdfIn PDF document text
    • https://bijariruxo.weebly.com/uploads/1/3/1/3/131382387/widogelomikaginatuv.pdfIn PDF document text
    • http://takipibimaxubov.sportsontheweb.net/ropowikumudibiwuv.pdfIn PDF document text
    • http://sdfafq.info/introduction_to_c_language_ppt_presentation_free_download77opd.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/49635031491.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://varosuvavim.epizy.com/63922129696.pdfIn PDF document text
    • http://xiramegakasivi.epizy.com/gto_thyristor_datasheet.pdfIn PDF document text
    • http://sekevidijonuji.rf.gd/31492769528.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_off0000ce7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7A 5136 bytes
SHA-256: 82cc9a714a8552c535a19b31782d87b5dcfa2eeb543227d956892e7a0b44bc66
font_01_sfnt_off0000dfdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDD 10756 bytes
SHA-256: b43bb281682e9f8958c30de2e0a6fdfa0692a20e9c8257c2ad82053ceab6fc19