Malicious PDF — malware analysis report

Static analysis result for SHA-256 8893605cd1b77161…

MALICIOUS

PDF

70.4 KB Created: 2021-03-04 07:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bd3d47bf55ae9c923b6965546ba60f0e SHA-1: 093842f06e21b19f333b0ee651d09fc67035abb5 SHA-256: 8893605cd1b77161ffe124c836de3055e8b65bb2b31e7c911a4808b785027d89
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://yafferge.ru/wix?keyword=barbara+corcoran+book+pdf In PDF document text
    • https://buxogenawake.weebly.com/uploads/1/3/5/3/135385170/segelunidale.pdfIn PDF document text
    • http://zoomita.fun/vojepiwifupupowegusitpxiex.pdfIn PDF document text
    • https://cdn.sqhk.co/noxawuge/dhaahaq/mipabasororoke.pdfIn PDF document text
    • https://cdn.sqhk.co/dezosanag/aqgjjjZ/calculator_for_clash_of_kings_cok_download.pdfIn PDF document text
    • https://nubeboganiroj.weebly.com/uploads/1/3/1/3/131384383/dudamava.pdfIn PDF document text
    • http://hermidkovo.info/fajedefematikipezedosa6dqzz.pdfIn PDF document text
    • http://seomagnat1.online/piguxeribabifik0sktp.pdfIn PDF document text
    • http://mybatut.store/rocket_pocket_gun9g0c1.pdfIn PDF document text
    • http://titoto.xyz/proses_fermentasi_alkoholzhtq7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sipariwemarisu.rf.gd/26592150581.pdfIn PDF document text
    • http://lagadasisipas.rf.gd/54994315084.pdfIn PDF document text
    • http://wamodaf.epizy.com/dead_by_daylight_mobile_beta_android.pdfIn PDF document text
    • http://demunoj.epizy.com/19107474230.pdfIn PDF document text
    • http://mevomum.epizy.com/dls_18_kits_psg.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/76676727537.pdfIn PDF document text
    • http://duzifif.epizy.com/12505932516.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_off0000d8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C5 5192 bytes
SHA-256: 7992b0ab9b49545488bc569b1d5f7904298a0421f22f75c63e2f79470fe05daf
font_01_sfnt_off0000ea7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7F 9964 bytes
SHA-256: 61c321acc8bc1733969d66489d2d282a7c55f58c92786b4f13bdb16779292a7f