Malicious PDF — malware analysis report

Static analysis result for SHA-256 528d2a0587a4f0ca…

MALICIOUS

PDF

84.3 KB Created: 2021-03-28 01:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f939dbed65520a44075962299ba5afd SHA-1: b4702bf70fa0995b5d286332814e09865e487976 SHA-256: 528d2a0587a4f0caaa570b896d757dd83027f646a9a6205f559984457e76cbb3
156 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a website with a keyword related to 'imovie mod apk for android'. This suggests a phishing or malware distribution attempt, likely to trick users into downloading malicious software or providing sensitive information. The PDF also contains a link farm heuristic, indicating a large number of external links, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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-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://dafemum.ru/wix?keyword=imovie+mod+apk+for+android
    • https://cdn.sqhk.co/damukowabij/3Sh0jh2/worifipawigov.pdf
    • https://cdn.sqhk.co/perajomipe/4Tf75OI/word_collect_level_1315.pdf
    • https://cdn.sqhk.co/pirujezexod/2Trm2ct/holistic_nutrition_and_health_coach_certification.pdf
    • https://cdn.sqhk.co/sezunofubuzi/yei0hhc/ap_budget_2019_in_telugu.pdf
    • https://cdn.sqhk.co/zifiguwosu/gg1idic/9835585772.pdf
    • https://cdn.sqhk.co/bedipidis/3BicKdY/starfall_calendar_april_2011.pdf
    • https://cdn.sqhk.co/bokirebi/hbkfAlW/play_soccer_battle_games_online.pdf
    • https://cdn.sqhk.co/xonoguduzob/Fjihagg/61861226207.pdf
    • https://cdn.sqhk.co/gagowuname/hdXiI6b/bottle_jump_3d_app.pdf
    • https://cdn.sqhk.co/kadeposamo/hf8aKhR/66859400321.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/29de03e6-5075-4836-9d37-a29ebb35978b/68947568310.pdf
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_68ab30612c8346bcae3c74fb7372224d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fb476ee7-0a22-4f6f-a6d3-555ea5c76402/shared_web_hosting_vs_wordpress_hosting.pdf
    • https://992bddda-184d-467f-a815-0165b41a2208.filesusr.com/ugd/69695d_9b63f01352b24510ae2051367613c480.pdf?index=true
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_d2fa3250be1f4a7390013e7246f401d5.pdf?index=true
    • https://bf5f3f24-cfb9-4aec-9f01-83e6d863dc5b.filesusr.com/ugd/1f4526_a527841d1a6f477a872831451db5b205.pdf?index=true
    • https://78636f1b-f2d6-4e4a-b4e1-07eac4c165d1.filesusr.com/ugd/434c97_843045b6d10e49ff95f6c4fe0a378691.pdf?index=true
    • https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_61360823c45b4548aad1e73a51f892c2.pdf?index=true
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_2e1105ffecf2453cbc0e38eb2e464924.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a2861492-1c8b-416d-84ab-361f54eebd16/lowrance_hook_3_transducer_installation.pdf
    • https://uploads.strikinglycdn.com/files/0efd087f-8429-4919-8858-f1a704a2d1d2/15389439688.pdf
    • https://45180a89-8b92-4d54-a4c6-cdf0ad6af3c7.filesusr.com/ugd/2b98a3_0fc9c6dc9c5c4b0ba5822cc3ec674df8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/416dd423-f0ba-486f-824b-9254dfa69fa2/dedubozozilugalizupexedu.pdf
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_e2f5d6ab623c4c48b0bb86be88d901a5.pdf?index=true
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_066dcea927fd460f8522ab32f9e04231.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f643.bin
d50f1967a4be03abff8eac1fa6304d070c6aa9a0aeba6fc53f14d63ca92f4072		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF643 5040 bytes
font_01_sfnt_off0001075f.bin
55367219fb494136658ec9c0749d5479399547d15048f77496db9959b3a1c2b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1075F 11128 bytes
font_02_sfnt_off00012de2.bin
fb040a85d295fd780e6ff8024f57ec46cf2c18681c7882b7fcdd900e484a6a2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DE2 16220 bytes

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