Malicious PDF — malware analysis report

Static analysis result for SHA-256 951bb85fcfbc7871…

MALICIOUS

PDF

65.1 KB Created: 2021-02-13 19:07:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e85aa388a1f5e3198870f589d14fee05 SHA-1: 36d17a98873f78b9a91ffcd940a5688d1303b6eb SHA-256: 951bb85fcfbc7871cf0cde7a248b374692a13c02a9e776826374cd670bd6e881
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=john+glenn+middle+school PDF link annotation
    • http://cashbackmoney.info/givomunadutejixudubogitqim2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483346/normal_60002e4b41438.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/XW4WxBX/teviz.pdfIn PDF document text
    • http://gladkoe-telo.xyz/fudejavesipitobovelqytrv.pdfIn PDF document text
    • http://vipadminler.org/dungeon_keeper_2_windows_10_download82ppp.pdfIn PDF document text
    • http://shoop-fl.ru/449161755192p81z.pdfIn PDF document text
    • https://fanevatonalusi.weebly.com/uploads/1/3/1/6/131637928/jevutigemufip.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/Eu7ezjg/54355396807.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408993/normal_5fe5eb8e04f71.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/82348405216.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/adobe_creative_cloud_after_effects_cc.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/todos_os_androides_de_dragon_ball_z.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_off0000c3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A7 5036 bytes
SHA-256: 59dd2a8f34786ad744419c452b111a23c11e806b85c0f05b67fa145f1915334e
font_01_sfnt_off0000d4a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A5 10384 bytes
SHA-256: 8d0df4b474c083d65eb542701690ecb0a3f27866902852b91285d57fdfcd5836