Malicious PDF — malware analysis report

Static analysis result for SHA-256 3474e9d2c808232e…

MALICIOUS

PDF

79.4 KB Created: 2021-05-10 07:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3a1b903710a39368a936d4e91fb0efa5 SHA-1: 279cda4902fcd2dca62c8f0a4f2bbf8fa1b69d1e SHA-256: 3474e9d2c808232e685761c3c5c4dcdf560a1b4f6500972ec0a2e55ab8f44b83
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains a link farm with 30 external links, suggesting an attempt to direct users to potentially malicious websites for SEO manipulation or phishing. The presence of embedded URLs and the overall structure strongly suggest a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • 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://golowaki.ru/strik?utm_term=water+resources+engineering+salary PDF link annotation
    • http://nubuxeki.scienceontheweb.net/add_and_subtract_fractions_quiz.pdfIn PDF document text
    • http://javaxirivibewi.mygamesonline.org/july_month_current_affairs_gradeup.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/fjiRgie/birthday_cake_ideas_for_toddler_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/EDhdiiz/flights_to_vegas_from_chicago_o_hare.pdfIn PDF document text
    • https://cdn.sqhk.co/migefareg/jgHSicW/vertigo_and_panic_attacks_while_driving.pdfIn PDF document text
    • https://cdn.sqhk.co/pazoxini/jcihjfz/blacker_the_berry_grammys_performance.pdfIn PDF document text
    • https://cdn.sqhk.co/tinukomafiro/bED9hgV/loud_sound_ringtone_bollywood.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://50fe66f1-00be-429c-ab6c-57a9f80d6ab9.filesusr.com/ugd/39cb9d_2948529588f84620bab22d41a96fe0b0.pdf?index=trueIn PDF document text
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_dfaa3fd9d9ad484ea3bfa19a8ee2c16b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/vidigimizawojigex.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/30098707950.pdfIn PDF document text
    • https://98350ace-7ac4-4f38-a9d9-579fdad8050b.filesusr.com/ugd/9b2d9b_df7203af00bc4687af44b119eedd3c72.pdf?index=trueIn PDF document text
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_8e86d31572b04e1b9a3df165e846b464.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/28213297472.pdfIn PDF document text
    • http://fugufaza.myartsonline.com/gadefabepumanunoxebimor.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/agile_methodology_tutorials_point.pdfIn PDF document text
    • https://a9b72ff8-ed6f-4212-96c6-d467cc4e2332.filesusr.com/ugd/7f5649_ed26e096c0574b349ee7d25824d09693.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wovugi/economic_growth_rates_in_follower_countries.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/photoshop_cs5_crack_version_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/havells_ceiling_fan_catalogue.pdfIn PDF document text
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_228781625a814713bdf3c4ed79204b5d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/free_printable_worksheets_capitalization_and_punctuation.pdfIn PDF document text
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_0c2e9f84198e45e795c50ef5d5b4040c.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C4 5080 bytes
SHA-256: 0eba89d45c00e53ed5079b6a14e671efe0e68737f10912458168546fdf3b1666
font_01_sfnt_off00010831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10831 11632 bytes
SHA-256: ae53fff4acfa6b2b2b06cc188d898d2f9ae3a80f0d49e0d5760e982a6a8bd4e1

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