Malicious PDF — malware analysis report

Static analysis result for SHA-256 25eafd0b1a42e019…

MALICIOUS

PDF

70.1 KB Created: 2021-03-03 06:11:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c124d71587742a0d75b5bf1b2eb1ec93 SHA-1: e8b79068898cd851ca6781bc98bd63ef76c7d967 SHA-256: 25eafd0b1a42e01967b357199ca96e945f372b05da0e5c8a7a15543e55ec7602
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://jacksth.ru/wix?keyword=composite+figure+worksheet PDF link annotation
    • https://jibizixowaxen.weebly.com/uploads/1/3/5/2/135296653/laregu_tepawad_pafarasojewa_diparomat.pdfIn PDF document text
    • http://academic-club.ru/genesis_1_6_explainedivryr.pdfIn PDF document text
    • http://misstourist.info/7303344551nxb2h.pdfIn PDF document text
    • https://sonenekuz.weebly.com/uploads/1/3/5/3/135302947/rotofo_vatidog.pdfIn PDF document text
    • http://ru-1.casa/john_c_maxwell_quotes_on_visiontumsv.pdfIn PDF document text
    • https://sizokagijabid.weebly.com/uploads/1/3/4/6/134652394/jawunowe-dusodigivejofa-xevamejixekunod-balotevepope.pdfIn PDF document text
    • https://pibiwija.weebly.com/uploads/1/3/4/8/134896476/donixi.pdfIn PDF document text
    • https://jifalutisapore.weebly.com/uploads/1/3/4/7/134772579/zazononojibas-kawinawazademi-jenikodu-sifejawezu.pdfIn PDF document text
    • http://smcjd.com/cables_and_connectors_and_their_functionsijfwa.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/who_is_ivan_ilyichd6hdg.pdfIn PDF document text
    • http://espaceclient-cmb.com/vavuzojepotikigwsvq0.pdfIn PDF document text
    • http://gamedv.design/ralulazibtrepn.pdfIn PDF document text
    • http://nonly.xyz/824412044505v7dm.pdfIn PDF document text
    • http://xploitcrew.io/siwirauc71a.pdfIn PDF document text
    • http://raisinsapp.pro/hp_p3015_maintenance_kit_installxpqnd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vogonadebemumox.epizy.com/1634540103.pdfIn PDF document text
    • http://sotixavar.epizy.com/lenoxagiwuvarumodaxikezas.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/alpsankhyak_form_last_date.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_off0000d833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD833 5136 bytes
SHA-256: f61376146274b0e2a5c1ec2848d4adbf8655c0741540744d6fd4dd01db3f094c
font_01_sfnt_off0000e998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE998 9928 bytes
SHA-256: 52385a917ebf67c444adba4543d1bd55d979aff881021bcc6f405749ec5fdc01