Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0a68f765174c1f…

MALICIOUS

PDF

63.0 KB Created: 2021-03-09 20:41:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 21aa0f9afbf1ed10c5620a5d9cf0c8e4 SHA-1: 8d3a59ed26ebae4680de897aa175314f39b02997 SHA-256: bf0a68f765174c1fd1dadf0b42d50811f0ae6342ca532e0d1e62cc8569ede8aa
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm with invisible links pointing to suspicious domains, such as http://com-login8.xyz/lafulal96p34.pdf. The document body contains obfuscated text and metadata suggesting it was generated by wkhtmltopdf, likely to disguise its malicious intent. The presence of multiple external URIs and link farm characteristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5346

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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
  • 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://xezojetit.ru/strik?utm_term=under+the+dome+season+2+episode+1+free+online PDF link annotation
    • http://goodsfor.life/wondershare_editor_ocrju8ug.pdfIn PDF document text
    • http://tozufokoxogo.22web.org/xokazanavagigomutububonu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414515/normal_5fec560aaaefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446155/normal_60167783369ba.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/digolofidasakozulede.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402712/normal_6008f5569069f.pdfIn PDF document text
    • http://rejasikega.scienceontheweb.net/fifty_shades_darker_online_popcorn.pdfIn PDF document text
    • http://com-login8.xyz/lafulal96p34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403565/normal_5fec35f4c3552.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/donupadukedumojo.pdfIn PDF document text
    • http://robugipunebib.mygamesonline.org/how_to_list_multiple_possessive_nouns.pdfIn PDF document text
    • http://zaxutakizet.epizy.com/fufakaxawote.pdfIn PDF document text
    • http://wozojatoxako.epizy.com/4909395613.pdfIn PDF document text
    • http://malunazix.rf.gd/wizijanibefagusu.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/amazon_appstore_for_android_4._0.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/nejubawosopukuzu.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/zodifotafusumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/323d52d4-98ea-4049-a805-b0b323e46537/kill_team_commanders_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/mt_elbert_forebay_fishing_report.pdfIn PDF document text
    • http://wupopadena.epizy.com/57273997480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0f4f57-c547-449f-b33a-fe32e7207fc5/hair_clipper_set_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4184a0cf-90ab-4d9c-a85b-4b7fba688271/numatisegasojodesijarewon.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/que_significa_soar_que_se_me_caen_los_dientes_de_abajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8953d5-c404-495a-a6ac-447cfb249b30/68881878624.pdfIn PDF document text

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