Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2543e07e887c87f…

MALICIOUS

PDF

93.4 KB Created: 2021-03-09 22:08:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce56e36213f693314f09bd8ad78ee39 SHA-1: 22c98c172a7881f96ee1be5d41598c748aa3cec5 SHA-256: f2543e07e887c87ff9ab5acc76b2de5a4459b0b7beb6a4b85abebe749175c6e7
136 Risk Score

Malware Insights

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

The file is a PDF document that exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains text referencing 'Presbyterian Medicare Advantage plans' and directs users to a suspicious URL, 'https://zajinet.ru/wix?keyword=presbyterian+medicare+advantage+plans', which is likely part of the phishing lure. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://zajinet.ru/wix?keyword=presbyterian+medicare+advantage+plans
    • https://cdn.sqhk.co/pigexebobe/iajcT8P/terra_hexo_review.pdf
    • http://jorowijedo.mywebcommunity.org/71299296776.pdf
    • http://xasumemazekejo.scienceontheweb.net/givisewejepujapidumuj.pdf
    • http://noxopadorilu.iblogger.org/dreamweaver_cc_bootstrap_templates.pdf
    • https://cdn.sqhk.co/vipatajase/iQfKgcm/huda_allottee_information.pdf
    • http://xejepurefe.scienceontheweb.net/nuxamalavabati.pdf
    • https://cdn.sqhk.co/nalujujoso/uijgcii/35155727773.pdf
    • https://cdn.sqhk.co/nexoratuxi/V8aigge/tip_calculator_apps_apple.pdf
    • https://cdn.sqhk.co/zedazisem/gjsjjge/facebook_lite_apk_version_2._3._6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b84ffb14-e939-4b60-ab3e-51cd1a7f0872/frases_para_el_juego_del_angel.pdf
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_e30554644f5d4a619f58d7c7258351d1.pdf?index=true
    • https://551f0ad2-75d1-4009-b90b-2f3e3e20230b.filesusr.com/ugd/c2bf0a_7728b176182c4090a43b2d2b1bd576aa.pdf?index=true
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_c23692c4a9ff4bfb8caa21fa0a84f71c.pdf?index=true
    • http://zegaruso.rf.gd/zidafotabavukenum.pdf
    • http://vinegufoxa.rf.gd/promissory_note_texas.pdf
    • http://bezopiwuzalobit.rf.gd/bloc_quebecois_platform_2019.pdf
    • http://dujazenemelix.epizy.com/how_do_i_calculate_instantaneous_speed.pdf
    • https://a0f88182-e1f9-4a9c-ba22-d5ce004c6985.filesusr.com/ugd/2f3216_efb7bd72ab6f4a2a9386f1db6504787f.pdf?index=true
    • https://f27bca7f-571c-471d-9e77-92385e6dfcd0.filesusr.com/ugd/9a0fa1_d3b80850cdf04392a5c2f3eb9c4a1133.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ecdb2656-f872-4ed1-b633-ac92d4fd493c/the_battle_of_the_labyrinth_graphic_novel_preview.pdf
    • https://uploads.strikinglycdn.com/files/52bfa7d2-7b05-4cdc-9a67-3b3dc3beb5ff/how_stock_market_works_in_india.pdf
    • http://tediguku.atwebpages.com/zudalowofavofutoxegoxutu.pdf
    • https://17c3d818-7f64-4152-976a-2fa997d7a7be.filesusr.com/ugd/e2c250_09d3e74efd9c42068912fd21c2fb8a4a.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102fa.bin
bd04b8412b333df4f5c9693fc0541b38ddfef60a6b914cf6114af65e9e83cd8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102FA 3072 bytes
font_01_sfnt_off00010df0.bin
846451eb780a1fdb4d3913cd47aad3d136c985a497dd4a5e54bda4eb8270c408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF0 5696 bytes
font_02_sfnt_off00012147.bin
7ddb8499ab772419aae78194f127d88acadb094b1473942b250dc390cf94a4ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12147 15232 bytes
font_03_sfnt_off000151e1.bin
2c5f1a2e3d9f683f6a217a47aeaaae813f7d4ef732a5ff54a929695507d09140		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151E1 16092 bytes

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