Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a9465acbd88f9e…

MALICIOUS

PDF

54.5 KB Created: 2021-03-21 08:51:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7488176d6ab086f812bf0fde7a7b7546 SHA-1: 26645dae9b76383ff85323442872850bced30b90 SHA-256: b0a9465acbd88f9eb8798d9e8ece133415723da5509e67a76f6cf181f739d381
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8304

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://fokemale.ru/award?keyword=annabel+lee+quiz+pdf PDF link annotation
    • https://cdn.sqhk.co/bofagenined/jjjbjb2/maberonizi.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/ijheNii/gasejimepiwozo.pdfIn PDF document text
    • http://meetly.space/hp_officejet_8600_printer_drivert71hv.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/ohaifhb/dabunefatimuwakakuxozizij.pdfIn PDF document text
    • http://lumacy.site/revue_technique_berlingo_2.0_hdipkmcj.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/aHBghjh/download_school_map_for_mcpe_mansion.pdfIn PDF document text
    • https://cdn.sqhk.co/xaveredero/9jgAyMS/26059666407.pdfIn PDF document text
    • http://voirlo.xyz/study_guide_for_human_anatomy_and_physiology_chapter_1_the_human_body_an_orientation_answersne5k8.pdfIn PDF document text
    • https://cdn.sqhk.co/rojotuwo/eDyhaif/44133120761.pdfIn PDF document text
    • https://cdn.sqhk.co/kuruwoke/Sefmef1/my_android_won_t_turn_on_at_all.pdfIn PDF document text
    • http://intereriia.com/zapogegozosc43u.pdfIn PDF document text
    • https://cdn.sqhk.co/ruradavi/c1jfFfU/break_it_down_song.pdfIn PDF document text
    • https://cdn.sqhk.co/vejurumilef/bkhfLbT/1007391834.pdfIn PDF document text
    • https://cdn.sqhk.co/zexupibo/1jcG8Hn/chargemap_charging_stations.pdfIn PDF document text
    • https://cdn.sqhk.co/xedaberetaj/jfghshh/riders_on_the_storm_snoop_dogg_instrumental.pdfIn PDF document text
    • http://sexesex.site/brooklyn_nine_nine_season_5_download_kickassxfcef.pdfIn PDF document text
    • https://83372c7a-1065-4b07-8284-b64562b46e84.filesusr.com/ugd/035489_edc12c21c4c848eaa8603eb9d40a7386.pdf?index=trueIn PDF document text
    • https://387a498e-9551-4239-9507-3183ba214552.filesusr.com/ugd/cd403b_553ccf9bd49744049b1ac7d52a30adaa.pdf?index=trueIn PDF document text
    • https://fed4949e-3809-4fc0-a28b-84c5d390f589.filesusr.com/ugd/94482e_8a9caa0563ff4628a2e27ec88af44a37.pdf?index=trueIn PDF document text
    • https://ff87c8b5-ca28-4ac0-94ba-218234037d87.filesusr.com/ugd/1d4e4f_579e816a96a24306920222632cb1e7ca.pdf?index=trueIn PDF document text
    • https://47a25507-5c4f-4e73-9b7c-0c49514c8174.filesusr.com/ugd/e00bd3_d3e3478ed6694cf49db676be2b6c914c.pdf?index=trueIn PDF document text
    • https://2a085669-a8dc-40eb-b1d3-71ea9d660f60.filesusr.com/ugd/cafc24_a503a1df367c4ff184ff0cba2f4af167.pdf?index=trueIn PDF document text
    • https://9cc02d22-446e-415d-9686-6e49aadcb3b3.filesusr.com/ugd/aa6a08_371c6ff8213f44f6a9da9dd71c264314.pdf?index=trueIn PDF document text

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