Malicious PDF — malware analysis report

Static analysis result for SHA-256 a076de7e4b8d0caa…

MALICIOUS

PDF

67.7 KB Created: 2021-02-11 18:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 82c0b4cc62849a999cea6891a0972d22 SHA-1: 0e3116a0d42b11fcc1a634d9aaf43f61434c351a SHA-256: a076de7e4b8d0caa05f569e6a61b2b885501a963373ee886d35aaf80da71299a
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://jottigo.ru/wix?keyword=quadratic+graph+transformations+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471959/normal_602024ef846b3.pdfIn PDF document text
    • http://espaceabonnes.com/avast_free_offline_for_pcuohgi.pdfIn PDF document text
    • https://xisofufewazexi.weebly.com/uploads/1/3/0/7/130776718/savijifavo_dopel.pdfIn PDF document text
    • https://rukagevilatixa.weebly.com/uploads/1/3/1/6/131608017/613647.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/Mygfibd/auto_background_remover_background_changer.pdfIn PDF document text
    • http://pefipegukanijel.22web.org/8374562247.pdfIn PDF document text
    • https://disanelazutiwi.weebly.com/uploads/1/3/4/3/134361230/gakibebavikuvig.pdfIn PDF document text
    • http://espaceabonnes.com/wow_bfa_engineering_guide37mnv.pdfIn PDF document text
    • http://pizidojokinesa.66ghz.com/58142336203.pdfIn PDF document text
    • http://zirekafeti.iblogger.org/dstv_guide_supersport_channels.pdfIn PDF document text
    • http://ebay-coupon.ru/la_noire_ps4_game_guidexpuj4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446790/normal_600a5269199fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_5fd28a481372f.pdfIn PDF document text
    • https://cdn.sqhk.co/retagigimusa/LgcjgDD/sevapemawe.pdfIn PDF document text
    • https://nibuwoxemunovox.weebly.com/uploads/1/3/4/7/134714338/0ebbc97b97f76bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480897/normal_5fec2acee6ca2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://latilofu.rf.gd/cadastro_nacional_de_informaes_sociais_cnis_inscrio.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_off0000c807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC807 5756 bytes
SHA-256: 3213bf016cd82338d1e8d4f22fe7eda983cbd88e335565a8f85c5845fe5b4225
font_01_sfnt_off0000db87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB87 10992 bytes
SHA-256: c05412e31807c6f10ab32c7bab4378ef4f6e5835dab6e3071d408acdc35fa80f