Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74f0199a439e8ab…

MALICIOUS

PDF

83.0 KB Created: 2021-04-03 00:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c2d7aaea99a0bf21373524ceb2e101d2 SHA-1: da75dc09814d135526a5ea4d0106630f154cc0bc SHA-256: c74f0199a439e8ab15cdcd8c5260eb8365971255005d41e785983ed3ed65af60
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=chronic+pancreatitis+guidelines+uk PDF link annotation
    • https://cdn.sqhk.co/bipozipo/jcQzuIL/wave_live_wallpaper_mod_apk_revdl.pdfIn PDF document text
    • https://bawozumop.weebly.com/uploads/1/3/1/4/131452782/dezokikapano-fexiko-kutezuxogo.pdfIn PDF document text
    • http://takaweri.mywebcommunity.org/ronepagukexasekuxamiwano.pdfIn PDF document text
    • https://miwidikanizi.weebly.com/uploads/1/3/4/0/134016908/cefd671.pdfIn PDF document text
    • http://vawurabel.mygamesonline.org/what_countries_have_alpine_biomes.pdfIn PDF document text
    • http://wojurimaxab.mywebcommunity.org/estudo_bblico_sobre_a_vida_de_jos_do_egito.pdfIn PDF document text
    • https://jonimewogil.weebly.com/uploads/1/3/1/8/131860125/3196923.pdfIn PDF document text
    • https://bewotenugajuvu.weebly.com/uploads/1/3/2/6/132695730/dizufuzovex.pdfIn PDF document text
    • https://cdn.sqhk.co/tanemurad/TgfDhcV/defevuwozidisakul.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/washington_redskins_record_by_season.pdfIn PDF document text
    • http://dafagaketa.sportsontheweb.net/28012307581.pdfIn PDF document text
    • http://dekovag.mypressonline.com/82462256860.pdfIn PDF document text
    • https://zotagozugub.weebly.com/uploads/1/3/0/7/130739891/0f1c85af5fafcbe.pdfIn PDF document text
    • https://cdn.sqhk.co/zotenejek/ihiuF8c/dynamons_world_unblocked.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/nezanurugega/lo_and_behold_movie.pdfIn PDF document text
    • http://jibimom.myartsonline.com/ctet_question_paper_2020_download.pdfIn PDF document text
    • http://ribigilubawedom.rf.gd/32797195493.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/cookieswirlc_minecraft_skin.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/adobe_flash_player_11_activex.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/suunto_ambit_2s_watch_strap.pdfIn PDF document text
    • http://fifusudevop.rf.gd/sequoia_capital_pitch_deck_template.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/employee_attendance_register_template_excel.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001076f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076F 5304 bytes
SHA-256: 958892ae809d39e5cfc981b94ac5cdb40eac3c1e17aa69a3163ce37e658ed662
font_01_sfnt_off0001196b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1196B 10884 bytes
SHA-256: 6e441b9be3962a8d1f0b8691f504dd9f0251f141038bc7afbbf5f6058ecf5e74

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