Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac9e246db1a96e8…

MALICIOUS

PDF

65.1 KB Created: 2021-03-11 20:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 47a871e6d0cfa4a0824e8fdd75cf1092 SHA-1: 9fd8b8e3806671fde38a4bbf9da3c6faaf775b83 SHA-256: 0ac9e246db1a96e8e052bc283d41df13395d6d0c60c43f8500725e8c39918132
156 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. 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 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=citizen+eco+drive+watch+manual+pdf PDF link annotation
    • http://sadinexiwa.mygamesonline.org/english_grammar_check_app.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/faliredumexufovazige.pdfIn PDF document text
    • https://disovipogazita.weebly.com/uploads/1/3/1/3/131398104/a3614d16f95c.pdfIn PDF document text
    • http://mitisavad.getenjoyment.net/how_to_renew_red_cross_lifeguard_certification.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/jJjfhdm/archery_knight_l2.pdfIn PDF document text
    • http://nitapida.mywebcommunity.org/alessandro_volta_biografia.pdfIn PDF document text
    • http://pobunav.sportsontheweb.net/lowes_harbor_breeze_ceiling_fans_with_lights.pdfIn PDF document text
    • https://foxenaduro.weebly.com/uploads/1/3/1/1/131164157/jetew_dojarusuraxatin_wajofagalilidat.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/jahhxyw/35513744651.pdfIn PDF document text
    • https://cdn.sqhk.co/jufenakajo/3ksAeha/kingdom_strike_heroes_mod_apk_online.pdfIn PDF document text
    • https://cdn.sqhk.co/liminekaj/cidPgc9/boris_and_the_dark_survival_mod_menu_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jadidawa/K2hbhze/41371779682.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/618569d8c5.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/xufujofaleki/rarukon.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/loxokomoduruxi.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/capacity_building_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/u8_watch_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/edward_maya_love_story_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/22496420721.pdfIn PDF document text
    • http://taroveruwidiba.onlinewebshop.net/78878813170.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_off0000c381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC381 5324 bytes
SHA-256: 2b01dce216a49a880eb393ce2700a4234873df01948b53b62dab9552d8fa5c77
font_01_sfnt_off0000d58d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58D 9824 bytes
SHA-256: 03ef0636661609a776e7b402f795776e8fd782592827cfc1a27e48fed23fe875