Malicious PDF — malware analysis report

Static analysis result for SHA-256 d82738292e489964…

MALICIOUS

PDF

79.8 KB Created: 2021-03-15 17:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b03472634ed8a05b4b2e513b0ba7bb2 SHA-1: b10510eeffbdba927474cb4338e165325c616872 SHA-256: d82738292e489964c3cd69e566f4468142dc3e06943d7d4f9648f50208280b9d
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to improve search engine rankings. One prominent URL, 'https://lozipotod.ru/wix?keyword=dream+league+soccer+mod+apk+2017', suggests a lure for users seeking software modifications. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for distributing further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=dream+league+soccer+mod+apk+2017
    • https://xokebewogaxuwu.weebly.com/uploads/1/3/4/5/134588239/4577349.pdf
    • https://cdn.sqhk.co/xaselavub/OiiT7if/44324863029.pdf
    • https://pebajubidu.weebly.com/uploads/1/3/1/3/131383648/daa62d.pdf
    • https://sorawujij.weebly.com/uploads/1/3/4/6/134671526/8216944.pdf
    • https://cdn.sqhk.co/badexejos/ibLNhi4/correlation_and_regression_questions_and_answers.pdf
    • https://rezisepadas.weebly.com/uploads/1/3/4/2/134235668/5355274.pdf
    • https://cdn.sqhk.co/petebeki/jTxankk/world_hockey_championship_2019_bracket.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e6d3e7d9-855e-42cd-9e6b-576312547cdd/what_is_my_kenmore_sewing_machine_worth.pdf
    • https://uploads.strikinglycdn.com/files/14dae41c-b5ec-43c9-8b62-ffdd66f3702e/importancia_de_la_matematica_financiera_en_la_vida_cotidiana.pdf
    • https://uploads.strikinglycdn.com/files/13b3d6a8-28ee-4d38-9e1b-57f81a302825/how_do_you_play_fantasy_basketball_yahoo.pdf
    • https://uploads.strikinglycdn.com/files/73169e57-08d5-437f-adb2-ac689ba5ea9c/how_to_exit_descaling_mode_nespresso_lattissima_touch.pdf
    • https://uploads.strikinglycdn.com/files/822814cd-c8ee-4165-91a4-72364576e7a5/bifabinevadawijiwer.pdf
    • https://uploads.strikinglycdn.com/files/6482b42b-da4c-4ace-accd-bb79be5128b8/97775143618.pdf
    • https://uploads.strikinglycdn.com/files/b95df1f4-c6fa-4581-98fd-96396d8b2ac7/11094665753.pdf
    • https://uploads.strikinglycdn.com/files/79dcaa48-b5f9-4707-98ef-69fb9afc5642/zovixizotedebigibikul.pdf
    • https://uploads.strikinglycdn.com/files/7b716623-80ba-4ef8-8b19-0a64f1937cae/how_to_use_toastmaster_mini_blender.pdf
    • https://uploads.strikinglycdn.com/files/53951725-8c03-466a-9335-5ef7d71cb887/freud_theory_superego.pdf
    • https://uploads.strikinglycdn.com/files/202998a2-0fbc-4888-97fb-b40cd30e7fc6/fitbit_charge_hr_2_wristband_replacement.pdf
    • https://uploads.strikinglycdn.com/files/07049c43-1f47-4a69-ae9f-e233c5e55878/wumevag.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f82c.bin
8529b67757fae1980246d0c64eff57c12cec5f8e2bbc42693f51d7e7e6e01fa6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 5864 bytes
font_01_sfnt_off00010c23.bin
a6396bd8179c4e69e5772a7d962f9d96bbcdabe27d4ba470c8be088a0d77b990
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C23 11240 bytes