Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba34851278b6d02d…

MALICIOUS

PDF

53.1 KB Created: 2021-03-10 02:26:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 598b9a89577b1a8bdc355dbcb1e36a48 SHA-1: e8cb636e4c67dbf8f33d8fef610729a81a2288ab SHA-256: ba34851278b6d02d4dd5a01c921bfcf5c0170c79c1bd104af8bd37ead5dd11f5
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.7008

Heuristics 5

  • 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.
  • 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://soxebez.ru/award?keyword=oxidation+of+alcohols+organic+chemistry+pdf PDF link annotation
    • https://mifurujuxix.weebly.com/uploads/1/3/3/9/133997148/gerur.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/DihBgeZ/cover_orange_level_2-_36.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/jjcheih/mine_rescue_level_17-_2.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/xamapufawur.pdfIn PDF document text
    • https://tezilejesitox.weebly.com/uploads/1/3/1/1/131163634/disima.pdfIn PDF document text
    • https://cdn.sqhk.co/bufudoraxala/ugjnTPD/teddy_roosevelt_national_park_south_unit.pdfIn PDF document text
    • https://vogitoroxubas.weebly.com/uploads/1/3/0/7/130739894/zoxet.pdfIn PDF document text
    • https://tesajezu.weebly.com/uploads/1/3/1/4/131452821/1914120.pdfIn PDF document text
    • http://retamos.mygamesonline.org/chicco_liteway_stroller_manual.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/2063716.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/jfHovij/48815255314.pdfIn PDF document text
    • http://sitebomobegux.sportsontheweb.net/python_while_loop_list_length.pdfIn PDF document text
    • https://kixefumikek.weebly.com/uploads/1/3/1/4/131437490/zijokexolunewin-fiduxaw.pdfIn PDF document text
    • https://mafadojidakiwo.weebly.com/uploads/1/3/1/8/131871721/kepopumowej_webubetabu_nufibutenab_farogafukafew.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/jhbaFjj/reversi_game_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/bghijib/7893530272.pdfIn PDF document text
    • https://684917c6-b594-4497-9ea4-141105166a5b.filesusr.com/ugd/0dc9f5_83197633a2594dab8f50b3076232481f.pdf?index=trueIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_6a31745de31a42469820603dc261000d.pdf?index=trueIn PDF document text
    • http://wurebosuloxu.myartsonline.com/62466300365.pdfIn PDF document text
    • https://f9fc249e-2e6a-4908-9eb0-88005465a50d.filesusr.com/ugd/2530ee_f936c87f89d047d4a4554508bfe1b42d.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_429471b489864215825bd8211b60bcbd.pdf?index=trueIn PDF document text

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