Malicious PDF — malware analysis report

Static analysis result for SHA-256 f30f806d5f70ac92…

MALICIOUS

PDF

82.0 KB Created: 2021-03-14 06:27:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36c5674d2f44dbe2041dfc9182aa6e74 SHA-1: ba3ea1aa8dbbc2d62707f444736b83f77639345f SHA-256: f30f806d5f70ac924ee25ade542da5a8204a5f131e7c63a6575df7494875cb2f
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. ClamAV and an ML classifier flagged this PDF as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains text related to the URL's keyword, suggesting a content-luring tactic. No scripts were extracted, but the presence of an external URI and the high risk score indicate a malicious intent, likely to redirect the user to a phishing or malware hosting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/wix?keyword=blood+drops+in+dog+urine
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5fe80210dce00.pdf
    • https://cdn.sqhk.co/bizifabov/dpicXjd/npr_mueller_report.pdf
    • https://cdn.sqhk.co/betarudigi/0gf0gde/dovaxo.pdf
    • https://static.s123-cdn-static.com/uploads/4417824/normal_5fe5e15432383.pdf
    • https://cdn.sqhk.co/xubuzivo/ifgjGig/99986882112.pdf
    • https://cdn.sqhk.co/waxobakal/6hjdurl/bird_of_paradise_plant_care_fertilizer.pdf
    • https://cdn.sqhk.co/favosejo/jghhfcj/amazon_eagles_complete_greatest_hits.pdf
    • https://cdn.sqhk.co/nodomepe/bifMMjf/leribubufalano.pdf
    • https://cdn.sqhk.co/rorajakura/r7hjihq/retrograde_amnesia_define.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/fd318c5f-eed3-4214-a5ed-ed7251573dfa/drinkwell_water_fountain_not_working.pdf
    • https://uploads.strikinglycdn.com/files/a9324baa-52f3-449f-b13e-ffbf82b064a8/39275916336.pdf
    • https://72b50e20-f79f-40ca-96b4-24bef83e308f.filesusr.com/ugd/1a1092_1b18a8f475744a558b9d717ebaced7c3.pdf?index=true
    • https://uploads.strikinglycdn.com/files/de552c53-e4e3-47d7-b371-696a481e1058/fadizisivojipabo.pdf
    • https://uploads.strikinglycdn.com/files/d651ef03-92be-4509-b267-c8e765add7c2/mukogene.pdf
    • https://38f9ccf9-db33-4582-994d-0ea518e52d38.filesusr.com/ugd/368de4_e1945562646d4434bb3db0102c7ed12f.pdf?index=true
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_d5e13c0fb3d84dca98d23eb921b7e3d5.pdf?index=true
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_15f11d67de1c4044800dcea5c558c946.pdf?index=true
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_ac338be6edb9487c9dfd2cdf34e044b5.pdf?index=true
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_f2e95993b38b4350ba0517cfbe5c1d07.pdf?index=true
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_5295f341cbe24dc9b729e55341c835ab.pdf?index=true
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_ba4a503476504c83ac7dfb75a8cc6d59.pdf?index=true
    • https://uploads.strikinglycdn.com/files/eeb63067-29ea-41e0-85cf-699b9052da6c/radio_thermostat_ct80_wifi_setup.pdf
    • https://f730d15c-1921-46d2-b6d4-288333e40990.filesusr.com/ugd/e2c223_d4bfbbe9df5541538add5545ea4d61c0.pdf?index=true
    • 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_off0000f5e7.bin
3e1597d4388062fe2c9cceee80cc85271ef46ba6b304105d02b9b514ae8effaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E7 4768 bytes
font_01_sfnt_off0001061e.bin
966a9c7a2d0134c3c5b33741c3a4bd56eb2f25408923497ed04fe9af5e642b76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1061E 11356 bytes
font_02_sfnt_off00012c1e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C1E 4324 bytes

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