Malicious PDF — malware analysis report

Static analysis result for SHA-256 c396192b1b9dcba9…

MALICIOUS

PDF

73.1 KB Created: 2021-02-11 18:02:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6872b9603869475b8c9f8b56a874d583 SHA-1: 6182ada44c979cf22ef7f068a2fbeeb2ed6c74a5 SHA-256: c396192b1b9dcba9f76f56e4c65a26978aa3973ef16faf9c485915ff6a06a931
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://baarspo.ru/wix?keyword=redox+reaction+worksheet+pdf PDF link annotation
    • https://cdn.sqhk.co/rewakevutel/d7Nzibd/spirit_halloween_coupon_25_off.pdfIn PDF document text
    • https://bejolikide.weebly.com/uploads/1/3/1/4/131437094/ff9457ce8dc17e.pdfIn PDF document text
    • https://simefaburiso.weebly.com/uploads/1/3/0/8/130814859/2047386.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/jrjaYih/86875128333.pdfIn PDF document text
    • http://dreabling.online/monutubisrcgpx.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/kipobokabewomotinurouekx9.pdfIn PDF document text
    • https://gupufema.weebly.com/uploads/1/3/4/4/134456882/9252757.pdfIn PDF document text
    • https://cdn.sqhk.co/sibamoxa/LjajaTb/red_sun_rising_deathwish_live.pdfIn PDF document text
    • https://wumaviki.weebly.com/uploads/1/3/0/8/130874148/fd23fc55a26f7.pdfIn PDF document text
    • https://cdn.sqhk.co/gabixeme/cu1Fmif/fnaf_vr_help_wanted_song_monsters_1_hour.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mujunuge.rf.gd/chicago_manual_of_style_newspaper_article.pdfIn PDF document text
    • http://lulevewutowa.epizy.com/kizadabivovazexuxeno.pdfIn PDF document text
    • http://nepupiborama.rf.gd/free_iq_test_with_answers_and_results.pdfIn PDF document text
    • http://bemeridalazobox.epizy.com/ziparurunifolowolubaj.pdfIn PDF document text
    • http://gezibetaw.epizy.com/goxabuwijezixozavo.pdfIn PDF document text
    • http://lodaxiku.rf.gd/26275257913.pdfIn PDF document text
    • http://welegovejebiwun.epizy.com/gcse_maths_non_calculator_answers.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_off0000e095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE095 5440 bytes
SHA-256: 803ed9d93efbacf9297b6a1f64c078ef687b6c4d329b37b108201129695b06b5
font_01_sfnt_off0000f334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF334 10520 bytes
SHA-256: e7260530e5c5b8b3fec7d2b218ecb4f6a661f5547a563f8b1f0be2e5d5b9c47e