Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc79341cd8bdec56…

MALICIOUS

PDF

73.4 KB Created: 2021-03-23 11:24:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d9b332f64393c66d819715c8ee60e20f SHA-1: 14ad8602f224a54de602726f36aa9ab524f8d807 SHA-256: cc79341cd8bdec566e73c3f290b82f715d6b243392076527876ba6b5cd0d4c90
156 Risk Score

Malware Insights

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

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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/wix?keyword=stronger+than+me+lyrics+melissa+etheridge PDF link annotation
    • https://cdn.sqhk.co/legusovej/hfTihnN/word_connect_puzzle.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/h2UaKid/giant_square_for_instagram_online.pdfIn PDF document text
    • https://cdn.sqhk.co/ninivaxibab/59vAXgg/new_bollywood_songs_2020_video_hd.pdfIn PDF document text
    • http://iclod.tech/jozazipemiruvabupupwsd8.pdfIn PDF document text
    • https://cdn.sqhk.co/zitiwofiru/gecgsDi/votiwivafake.pdfIn PDF document text
    • http://cardioactiveufficiale.site/611483688186cqfu.pdfIn PDF document text
    • http://afracheat8.xyz/minecraft_1.2_8_apk_centro_comercializnz4.pdfIn PDF document text
    • http://gerisekazaleg.22web.org/93263023312.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://be1d055c-b83b-422e-9e68-1bf13cef350c.filesusr.com/ugd/5b1e3c_0d1954fce6ea4f979631fd4af293530c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/bon_jovi_runaway_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/punofizidibu.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/prentice_hall_algebra_1_online_textbook.pdfIn PDF document text
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_81d79b9ca549447f924e490199b9b130.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/vegodasukajotofu.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/4047324587.pdfIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_201ff246a3ff4c49adaffda74e57c2cb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/bseodisha._ac._in_omr_sheet.pdfIn PDF document text
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_3231c4c7e7de4df1bf9344640749c54d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejados/edexcel_igcse_business_studies_textbook_answers.pdfIn PDF document text
    • http://sasavinoseg.epizy.com/1636071377.pdfIn PDF document text
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_89c8fae3da424792a158cf298d0c1e27.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EC 5348 bytes
SHA-256: 5376186600635160c836d34bd30346cebbac85c8da30e62c3a77b45d0a8d8225
font_01_sfnt_off0000e6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E3 10212 bytes
SHA-256: 7650954586ccc1ccb21f9e611855eeb6d01c4c0d93753a397730e1a34418cdb8
font_02_sfnt_off000109a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.