Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c006cf8e1b6e1f1…

MALICIOUS

PDF

53.7 KB Created: 2020-11-01 07:14:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 71f89942e24f3eb786e4376d81ae7601 SHA-1: bfcbd74b605941718cb146ac84216227e0a5824e SHA-256: 6c006cf8e1b6e1f18cb24c48788a773fba8fb134cd1cc221097ae4da6806eaa5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to external PDF files. One of the primary links, 'https://ttraff.link/123?keyword=it%2527s+driving+me+out+of+my+mind+that+girl+is+poison+lyrics', is flagged as a malicious redirector. The document's structure and the high volume of links suggest a link farm or redirection tactic to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/123?keyword=it%2527s+driving+me+out+of+my+mind+that+girl+is+poison+lyrics In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f8efbadc8b44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f9882c33551f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411273/normal_5f96d323d05c4.pdfIn PDF document text
    • https://xadaxiwunitari.weebly.com/uploads/1/3/0/8/130814235/679934.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377400/normal_5f8f626919167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381347/normal_5f9370c0b0dab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f890b55af563.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3718456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392195/normal_5f9095f7e27ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383678/normal_5f8c6faaa585c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_5f8c1d527c2a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f8a2be052bcf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac50963-fe3e-4529-9d91-8e683b18d080/zemobomupujoli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e87ee6c-0dfd-425f-9a08-29bd579e0554/60143417941.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009e60.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9E60 23960 bytes
SHA-256: bb5ffbf0994b30d4f75732757b275e8d7ff5325fa7578384a502e0d5787d2530
font_00_sfnt_off000056b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56B3 5704 bytes
SHA-256: e3d47e37bf098c66d58748124c16700ca0bd25acbfc2632f291d384719a68223
font_01_sfnt_off000069f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F7 6860 bytes
SHA-256: 525266bc20554ebea9914305f3bcaaa99a87fa7ac7ac4bee85a272b390ae168f
font_02_sfnt_off00007c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7A 9828 bytes
SHA-256: 0975adb5ad88ab7f2ac704e460278ec08fd795ed69f14dfcd42244461bb431a7

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