Malicious PDF — malware analysis report

Static analysis result for SHA-256 33011cea0b79703c…

MALICIOUS

PDF

65.4 KB Created: 2021-02-28 17:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 81f0ca40f517b7269393d504a8980148 SHA-1: 8a35bc6cb55e3e585bd39b1d860bacc8d4d98a31 SHA-256: 33011cea0b79703c12a731e8fb3590a7815dc687ac7250985633ac837dd7d8a5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are disguised as SEO-optimized PDF documents. The primary lure appears to be a search result for a common query, aiming to trick users into clicking malicious links. The presence of a PDF link farm heuristic and ClamAV detection strongly suggests malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9716

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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/award?keyword=how+to+change+battery+on+seiko+quartz+watch PDF link annotation
    • https://nulesurusisozi.weebly.com/uploads/1/3/4/7/134744420/mesigenivularelupow.pdfIn PDF document text
    • http://olymp-trade.top/italian_translation_exercisesjfx1n.pdfIn PDF document text
    • https://vusuvokitajize.weebly.com/uploads/1/3/0/8/130874031/e54c8a6320e1f59.pdfIn PDF document text
    • http://importants.space/princeton_review_sat_prep_bookgi8cs.pdfIn PDF document text
    • http://prizinsta.online/marvel_future_fight_quicksilver_guidev2g9e.pdfIn PDF document text
    • http://jijuduli.mywebcommunity.org/how_to_learn_english_in_30_days_through_tamil.pdfIn PDF document text
    • http://br1.red/maus_comic_espaol_descargar4azyz.pdfIn PDF document text
    • http://dewobazul.22web.org/58642767802.pdfIn PDF document text
    • http://5gusevshop.space/how_to_get_unlimited_money_in_simcity_buildit4p9sd.pdfIn PDF document text
    • https://sujanumijixedi.weebly.com/uploads/1/3/4/5/134501714/tamopifemibixik_mexoguda_terivoja_vuzirorad.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/53423997646.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/vewugakesilosug.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/latozaxomeruvo.pdfIn PDF document text
    • http://bopunuzas.rf.gd/42697601595.pdfIn PDF document text
    • http://wokoguzesel.rf.gd/balupu_video_songs_free_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/coloplast_skin_barrier_protective_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/descargar_whatsapp_plus_gratis_2019_apk.pdfIn PDF document text

Related samples 8

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

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