Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb5cc429d2e779d…

MALICIOUS

PDF

81.0 KB Created: 2021-03-18 03:11:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4ea5fb61c3b53d960a46d140b4615e6 SHA-1: 10a2bb698d35b6a4bdbd940892fb6db674c055e3 SHA-256: 2eb5cc429d2e779dcf19d28b47eba1da1b1dfb0e1f8a630b9b96305ad6e119f0
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or redirection mechanism. The primary URL, https://mezovuduw.ru/wix?keyword=ibis+paint+x+pc, is likely used to direct users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/wix?keyword=ibis+paint+x+pc
    • http://ledozikatiresev.scienceontheweb.net/35905384170.pdf
    • https://cdn.sqhk.co/kekotenonaxu/hhhchdZ/sas_zombie_assault_4_hacked_android_download.pdf
    • http://jarewitof.mypressonline.com/what_is_stanislavski_acting.pdf
    • http://kidufamipowanot.mywebcommunity.org/pdf_to_word_online_converter_100_free.pdf
    • https://cdn.sqhk.co/kibizatududo/hcicEv9/bird_feeder_squirrel_proof_diy.pdf
    • https://cdn.sqhk.co/wogokodu/haIZFif/au_pair_in_america_application_form.pdf
    • https://cdn.sqhk.co/zebenane/5xjhjeB/33166295788.pdf
    • http://nulivanofika.mygamesonline.org/el_poder_de_una_visin_joel_barker_resumen.pdf
    • https://cdn.sqhk.co/kapudome/RIM7VqM/mlb_playoff_standings_chart_2019.pdf
    • http://sipipewawezizuf.getenjoyment.net/57188286379.pdf
    • https://cdn.sqhk.co/vanujapuduti/difgiAq/active_learning_strategies_in_teaching_english.pdf
    • https://cdn.sqhk.co/ranemagesoga/idjAsja/389115580.pdf
    • http://waparudadip.mywebcommunity.org/reading_rules_in_english.pdf
    • https://cdn.sqhk.co/fuvazuginu/hh9hjia/fesoretowukizematowis.pdf
    • http://kolagozisil.mywebcommunity.org/lerujifafanuka.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://18b09f4e-de4d-4c1b-9fe6-be55c63b1c00.filesusr.com/ugd/cd81e9_1ded717ebb63461d9a145bc6afafa39b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7296849d-1a20-4453-bb1d-81502ff4ae9e/casio_g-shock_gd-100ms-3.pdf
    • https://uploads.strikinglycdn.com/files/a48394ee-5f04-4299-94fa-47f20b71e51d/90291209048.pdf
    • https://uploads.strikinglycdn.com/files/f12b8429-4376-4b90-a756-f3b4a344c919/31528418067.pdf
    • https://34184745-b1ec-4725-b105-60c94cc90871.filesusr.com/ugd/63369f_b02a17ab83614fab98d6cb2250ec5eb8.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_off0000ed28.bin
6bf2ac6630c2b3703dd8bf579c9d0168df72e29335ecedf1cfe4542d38682409		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED28 4944 bytes
font_01_sfnt_off0000fe0d.bin
50894bb2dea326e57f1d8d3cc2a6a757bb586f29be7cbfb22f75ae51a8f8af21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0D 10736 bytes
font_02_sfnt_off000122b3.bin
40362fbc9d771ad4ffebf23d851d0e608cbe5e910bc9c9578be8a04431091e8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122B3 16084 bytes

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