Malicious PDF — malware analysis report

Static analysis result for SHA-256 187d52f8e1fedd37…

MALICIOUS

PDF

77.5 KB Created: 2021-03-22 17:09:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b827ed1a2d91c93cab0bd0b074cfd688 SHA-1: 9a5f55b43ec2ff30e34751ba3d9f4fef4c982e7e SHA-256: 187d52f8e1fedd37ca910913c98885ef0bb16a5560ec8d63b016e0e3bd293907
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to trick the user into visiting a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/strik?utm_term=pegasus+faucet+parts PDF link annotation
    • http://edaruzal.xyz/anatomy_learning_apk_full5gmvm.pdfIn PDF document text
    • http://selitir.iblogger.org/dufewukodijutijupufifi.pdfIn PDF document text
    • https://bekajujoxofutit.weebly.com/uploads/1/3/1/4/131406668/fawonarokutalap_gewiru_buwetabufixixup.pdfIn PDF document text
    • https://cdn.sqhk.co/ramawuvade/ejcfBGk/digabupuvuvaxep.pdfIn PDF document text
    • http://mikrotikwizard.com/fun_camp_games_no_equipment975v7.pdfIn PDF document text
    • http://expo-kit.ru/95846704122fkqo4.pdfIn PDF document text
    • https://cdn.sqhk.co/sanevujaguda/ajdstAV/nick_chubb_fantasy_trade.pdfIn PDF document text
    • http://com-connexion.xyz/android_secret_codes_20198a8co.pdfIn PDF document text
    • https://rixorololexapi.weebly.com/uploads/1/3/1/8/131857390/malugopawop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_c68c41980846490fa443958cac9db177.pdf?index=trueIn PDF document text
    • http://sojoxorizupeza.rf.gd/raypak_pool_heater_error_code_rollout_sw_open.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/swann_smart_hd_wireless_security_camera_review.pdfIn PDF document text
    • https://76df98a8-3e94-4eee-a6f5-23e1de06049b.filesusr.com/ugd/54c74c_d7db2b86a3cb4330937fed6d3596ffeb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/is_supply_chain_management_a_good_career_in_canada_2020.pdfIn PDF document text
    • http://xipudabokodem.epizy.com/2007_chevy_impala_transmission_problems.pdfIn PDF document text
    • http://binawojojin.epizy.com/43386448243.pdfIn PDF document text
    • https://d56a38bf-d62e-453c-9b5b-5b2fe88aea46.filesusr.com/ugd/359e64_274951ac92d643ab85543ba223b61907.pdf?index=trueIn PDF document text
    • https://b1706aec-e9b1-4c6c-9a93-f14ef4a1c402.filesusr.com/ugd/3b47cb_a0ea822abf6c4560bd60e15643f7222d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/wizabijufiwojasi.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/bushnell_neo_xs_watch_band.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/stanley_garage_door_services_traverse_city.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE6 5152 bytes
SHA-256: 39c5a73c8392a602e1c79b62560b14d6a2312e8285fd67a078282727ce80ad68
font_01_sfnt_off0000ed89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED89 11060 bytes
SHA-256: 4741d68138aa26890991401e6117fba7147b1ea42aa036ec697f1ef8909cd6ac
font_02_sfnt_off000113a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A4 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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