Malicious PDF — malware analysis report

Static analysis result for SHA-256 5377286bd48f4dc9…

MALICIOUS

PDF

69.8 KB Created: 2021-01-25 02:24:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 057312d4f7e5f1541679a36a75ea9061 SHA-1: 1a82c0050a9d0a43efa578924353c2a8f028df38 SHA-256: 5377286bd48f4dc9882a9c1f0dd14d0cd056188a0968f5ab55fbf96d2b421c4d
184 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
  • 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/wb?keyword=celestial%20seasonings%20green%20tea%20egcg In PDF document text
    • https://cdn.sqhk.co/figakeves/KFOOheP/89480211128.pdfIn PDF document text
    • http://delayikapy.xyz/246486903620ns8a.pdfIn PDF document text
    • http://idealica-italy.site/top_scorer_premier_league_2020_todayyb9dc.pdfIn PDF document text
    • https://cdn.sqhk.co/sabimejuka/nLeifTA/4040851991.pdfIn PDF document text
    • http://help-violation.com/50541777657n02ah.pdfIn PDF document text
    • https://cdn.sqhk.co/kixepijap/ZAuhjR9/unmatched_air_traffic_control_hack_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/OhigihV/20140763416.pdfIn PDF document text
    • http://bilapak.66ghz.com/alaipayuthey_ringtone_kuttyweb.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/peveziwoguxuzam/beachfront_bargain_hunt_episode_guide.pdfIn PDF document text
    • http://ledukuxadom.epizy.com/carti_despre_antreprenoriat.pdfIn PDF document text
    • http://zakuvusebaj.epizy.com/chapter_12_the_integumentary_system_answer_key.pdfIn PDF document text
    • http://kejarajavamoge.epizy.com/uc_browser_free_for_pc_filehippo.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/giwojagowudiku.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/breathing_techniques_for_relaxation.pdfIn PDF document text
    • http://tafujeloraxofo.epizy.com/javascript_blob_json.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_off0000d243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD243 4872 bytes
SHA-256: 54baa0197ab9a2c0309ec46a544b2293e50c3e19d63d8488740f08be552d93ca
font_01_sfnt_off0000e2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E0 11536 bytes
SHA-256: c8b98c41dbc591cd1f0fd330a2416e43c6c13718a1bd882e215e0fcaff7b6aaa