Malicious PDF — malware analysis report

Static analysis result for SHA-256 852e8a0cb5a77315…

MALICIOUS

PDF

49.6 KB Created: 2021-04-01 01:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 86cf072aea5d734129702b38648c19ea SHA-1: 8d197cc51ab9d9e2a61b67ad3c735ed54023f439 SHA-256: 852e8a0cb5a773154f16705e126c9a5727b62f3a82f5397d0f16b1d279e5d349
124 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 0.6386

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 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://leonvi.ru/aws?utm_term=how+often+should+you+run+a+cool+mist+humidifier PDF link annotation
    • http://kebakef.iblogger.org/couper_page_en_deux.pdfIn PDF document text
    • https://cdn.sqhk.co/gufojakig/iaLgfhh/bolikekizamapanolukewavob.pdfIn PDF document text
    • https://cdn.sqhk.co/lukulobu/siepcjc/felajitone.pdfIn PDF document text
    • http://wisagomojinux.iblogger.org/divuxofegaxedewixujodu.pdfIn PDF document text
    • http://gakivako.iblogger.org/bobewosevewazi.pdfIn PDF document text
    • https://cdn.sqhk.co/jakabapewuv/XpsPRgx/first_aid_training_video_tagalog.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/SZhfhFp/the_wonder_weeks_app_review.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/Chaxgf4/finders_keepers_full_movie_1984.pdfIn PDF document text
    • http://nitodizej.22web.org/dubopuxulepezurilovolen.pdfIn PDF document text
    • http://fexuvukenix.22web.org/alliance_x_empire_equipment_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f501613-44e5-471a-9265-7ac636938c2a/ruzigadujolavemopiwola.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/712dfc0a-38ee-44f9-af01-1788508314fa/jak_wyznaczy_q_cig_geometryczny.pdfIn PDF document text
    • https://3c45aaf8-24f3-4cde-9773-cf44a0a970d3.filesusr.com/ugd/ae7d54_0deddc43a85946179ad0f2009dd01225.pdf?index=trueIn PDF document text
    • http://lalukegadugubu.epizy.com/vaponever.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/mapifunururej.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/juwade.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/29842134254.pdfIn PDF document text
    • http://fuwuwiri.rf.gd/mopojifituwowenuto.pdfIn PDF document text
    • http://xunevonobi.epizy.com/diary_template_word_2019.pdfIn PDF document text
    • https://f608bf75-187c-4b28-9621-af925c05c2b6.filesusr.com/ugd/05e3ad_a3d26943aa204261a50a1fa176dee4d4.pdf?index=trueIn PDF document text
    • http://wukosow.epizy.com/are_veritas_gmat_practice_tests_harder.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/gmail._com_for_blackberry.pdfIn PDF document text
    • https://07e0a16e-b77d-475b-b724-88bbaedb347c.filesusr.com/ugd/8e9e2f_f1e064cb4b3e4a38a041523b5d891ca9.pdf?index=trueIn PDF document text