Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef04674ee01d946…

MALICIOUS

PDF

84.2 KB Created: 2020-12-17 15:43:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0aabd04db2f07e024123b328a70ce9d6 SHA-1: 37c6bbfa93aa6311551a47f73d827660f2629cca SHA-256: eef04674ee01d946c837423e16c1907c1e9b36ee5140acf606cbd1fe9b7cbbdb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://traffnew.ru/123?utm_term=whole+foods+market+donation+request+form PDF link annotation
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/3341119.pdfIn PDF document text
    • https://wemovimezatura.weebly.com/uploads/1/3/4/6/134611727/2874059.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/1021682.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/govelupobusufop-gedozonaxenulu-xonere-netarawigi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6b5e4f98375720d8bbe4/1606380382548/madden_19_cheats_ps4.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10d80e9fc3622d522f76c/t/5fd048a989fd2c07d1fec253/1607485610557/28180517247.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14581c89e1c4b8fc0e725/t/5fc3fdacf3de5e49b5e05601/1606679980760/strange_brew_tavern_allentown.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58cd5e9fc3622d54176b0/t/5fcf121768c18617d409f3d2/1607406103873/forgotten_hill_tales_walkthrough.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1846b97992eb55bfc03/t/5fc104e51972c46e3cc2a07f/1606485227688/dumidalejetirawigitul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce086f8a652741489a4cb6/t/5fce2a5ce43f2b00a8d256b8/1607346781031/how_do_i_download_xmeye_for_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9fec917750a3d7b949/t/5fc508939ee0f32b87f24971/1606748308028/larusunetufifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d24860c-e5cd-4e7e-9b6a-49df76169429/exercice_quantitC3A9_de_matiC3A8re_seconde_corrigC3A9.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BA 5352 bytes
SHA-256: 2e1c6d3398851abec009040fb7f00bf063f6c59ce0c198984f55aa8f232d82a9
font_01_sfnt_off000106c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C9 11588 bytes
SHA-256: a7a1158e5d71d73d1e51ba9f078598d61d2288a35c27c6f737755ef444cc4f58
font_02_sfnt_off00012e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E63 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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