Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6f2eaabc3cb7ea…

MALICIOUS

PDF

87.8 KB Created: 2021-03-09 03:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fedfaf4ce5ff9419cec63e4801a92f42 SHA-1: 188626dec4e90cff91cd823121609b8c070403b9 SHA-256: eb6f2eaabc3cb7ea7ae3d46884172692ca39ef9b5676b5610f19862adc2f613a
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The PDF contains a large number of external links, many of which point to potentially malicious domains, suggesting a link farm or phishing lure. The embedded URLs and the heuristic findings indicate that this document is designed to trick users into visiting malicious sites, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/123?utm_term=watson-+glaser+critical+thinking+skills+test+pdf
    • http://vosalax.22web.org/63614377714.pdf
    • https://cdn.sqhk.co/wagejino/jiujbhc/dc_comics_52_explained.pdf
    • https://cdn.sqhk.co/xeribaba/zHHhafZ/lenovo_support_phone_number_australia.pdf
    • https://cdn.sqhk.co/raxuzuvuluf/ibig5jg/xelago.pdf
    • https://cdn.sqhk.co/nopavoboriru/hqhjFmc/fazorazanolobebizexav.pdf
    • https://cdn.sqhk.co/vusutesilo/c30gejb/how_to_sharpen_a_chainsaw_video.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_62e9b74db28c468584644e0cee19b6e4.pdf?index=true
    • https://29159626-56e2-4eb2-a8c1-eb081f451e44.filesusr.com/ugd/a58502_f7f37b38a19f45c1998b52ffcbdd4649.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4209c3c9-5698-41a5-9345-706f5dbed77d/gibekafim.pdf
    • http://xonezerimagu.rf.gd/33217517566.pdf
    • https://f8ba888e-8f71-4fde-8303-550399648f4e.filesusr.com/ugd/17ce20_234fdfdb8d474cdca37e5554e3b16a31.pdf?index=true
    • https://uploads.strikinglycdn.com/files/76d15872-4936-4dd9-933f-18087361be9d/kung_fury_2015_imdb.pdf
    • https://uploads.strikinglycdn.com/files/859c2c84-0bf7-494d-8899-ddfb4cacf003/70882355838.pdf
    • http://zedoliwitimevaf.epizy.com/mikuwadawegenuf.pdf
    • http://titarugusarab.epizy.com/30552144903.pdf
    • https://uploads.strikinglycdn.com/files/ec9ec8e1-ce5a-41d2-9939-2e7d990ca90b/hamilton_beach_coffee_maker_k_cup_error.pdf
    • https://uploads.strikinglycdn.com/files/092d827c-1fba-47d8-9921-f5fa822631ee/how_bad_is_dunkin_donuts_coffee_for_you.pdf
    • https://4123e755-5e7e-4fb8-b167-49ba90d37259.filesusr.com/ugd/fd3290_403bbe8a1d974fc7b550a395189323df.pdf?index=true
    • http://sonepepebevor.epizy.com/megosolifejaxukemapuxi.pdf
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_7ef005ffeddd49ae96381b4ab1b93e4b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bdd4e2da-8b86-47e4-bb68-b0141e5d2693/how_to_start_a_powermate_5700_generator.pdf
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_7738fada284e4a3c9fd878d14929c390.pdf?index=true
    • https://uploads.strikinglycdn.com/files/832a6b64-32a2-4229-b259-28418fe668d8/which_trading_is_most_profitable.pdf
    • https://cb38ef3f-1f2c-4622-8962-dca261660167.filesusr.com/ugd/3ae201_485870e5680e40b080f3d7bec9d7de01.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7932f5a0-01db-4909-bd0d-5d40381e7934/zabipudimojixizujazik.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cb8.bin
3e4ef1936790a65d92d495e8e3ef4229904f5e24f3afb484caaab815e7ed0cd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB8 5316 bytes
font_01_sfnt_off00011ed2.bin
b7cafbcfd5544f3b79c659d9470c3b745de78aa5d6c6c01cfb1e24b2ccc86523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11ED2 10548 bytes
font_02_sfnt_off000142ab.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x142AB 4324 bytes

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