Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba721395ecf53336…

MALICIOUS

PDF

87.0 KB Created: 2020-11-27 17:42:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9feadb01ccc1979726f5ad7f1fa5d529 SHA-1: dfdbd8fc6da04a52ea3d281a28483741291776f7 SHA-256: ba721395ecf53336de66b4b330081246313db666251087ee9096e449eeec9895
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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://gettraff.ru/strik?utm_term=tiktok+fans+free+real In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f9eb4f1d6add.pdfIn PDF document text
    • https://garagagu.weebly.com/uploads/1/3/4/3/134364865/48af974d853e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384048/normal_5fa2de13e6c2d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/df13b36e-133c-4972-b3bd-31b9ba00052c/revista_cuore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/393c72e6-5a56-423b-a9dc-7fe3f5d80770/some_conservative_and_liberal_criticisms_of_the_new_deal_and_its_legacy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70311cb2-5da9-4d60-9192-021f40aadb5d/stockx_discount_codes_for_seller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26f9adad-e27f-422b-b363-001b96b1db65/rixitadepezuvoloxanaxek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb91518a-c782-448e-b6db-6c3c6522ed07/dijogowuxurizepefad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21e1c4a2-7a48-4aa1-a18c-71dffd896336/75691017786.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/2665351612.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD99 2988 bytes
SHA-256: 5638f35b922e2566e2270eaa543f2e6033dadf3afa0a55bfb0fe6a3eca99189a
font_01_sfnt_off0000e83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83E 4776 bytes
SHA-256: 6f8b08aa45a3b2fb50abd78648edcdfb2d08eda4fca6433a4dfcc107694bcc2a
font_02_sfnt_off0000f883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF883 4152 bytes
SHA-256: e8289f3e5e473f3623af4c429a59152dcca6f35e3b09ecb42285507b4d1aea89
font_03_sfnt_off000108ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AC 11436 bytes
SHA-256: 4b39dc867128dcf03944bfc7ed4dbedd1e084a8d55a03fc6bef34e81fc04f5ae
font_04_sfnt_off00012fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FE4 16580 bytes
SHA-256: a5fa5d7be86a16aa7469d7bf5e6b9f76dd6aa7e8df7539a59b19dc7f8f805501
font_05_sfnt_off0001466c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1466C 1736 bytes
SHA-256: 1648accd5638f26481c437d0e436fdfb03edab78dab75f4e73239278c8cddc19

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