Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd89470e1a54571…

MALICIOUS

PDF

81.0 KB Created: 2021-04-18 02:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 718bb445502a031f50f8b446495e9a37 SHA-1: 8adad5f9fd05f885d0280cbc9237fee748b81cb1 SHA-256: ffd89470e1a545715211a24108d7551271cb5686f5e51a925ce3b14427350798
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://lozipotod.ru/strik?utm_term=wash+out+hair+dye+for+brown+hair PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382186/normal_600d50a18a8ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_605cb1cf07130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376856/normal_6048ead9d142b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474176/normal_5fec2f93694bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450641/normal_5fc95b08d0a8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://994180ce-385f-4272-9833-4a204a825e0f.filesusr.com/ugd/ec0c41_b0cf40ae3a984dcb841234a2518fbca2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/how_to_program_my_xfinity_remote_to_my_soundbar.pdfIn PDF document text
    • https://36ba0bd5-485c-4bd5-924f-6a5e18dcb854.filesusr.com/ugd/96419b_f71fff96dbba456ea42affa9e35bfff6.pdf?index=trueIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_4f8a304571304448bcdf0d8802fcc18b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/libeganot/does_walmart_sell_zte_phones.pdfIn PDF document text
    • https://26b54b0d-7067-4615-bd5a-e9f638bc9197.filesusr.com/ugd/26f5b5_d319ec222f69414f84d05e9106d5338a.pdf?index=trueIn PDF document text
    • https://1eb42bdc-3da6-4b32-b75f-4382f1721f8e.filesusr.com/ugd/35474d_c7227c6303c444bfadad6fcab9289e0c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/nupaju.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/zelda_ocarina_of_time_hd_demo_unreal_engine_4_download_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/how_to_use_ariens_deluxe_28_snowblower.pdfIn PDF document text
    • https://ccd4a2e6-63e2-4dcb-a02e-1ae1253dabcc.filesusr.com/ugd/059ff1_c3ade8474e6e410cb5213a208fabbbc9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/befafuni/pitexovekopisake.pdfIn PDF document text
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_7f873752cf6a4a2ab1ca1b09820d4db9.pdf?index=trueIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_fecd319fc5d64679b5fa531b5ca7fddd.pdf?index=trueIn PDF document text
    • https://944456f3-75eb-4cd6-bbfd-656b3713ada1.filesusr.com/ugd/2c8d66_c09b8a3272b5493aa66e5be75df05700.pdf?index=trueIn PDF document text
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_8389b5ffb754425db85d6c50ff282cd7.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC13 5308 bytes
SHA-256: 448fd31c04ad558e8b455ea680c8a1a1429dedd295526861f1a7dfab300d901b
font_01_sfnt_off00010e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E35 11440 bytes
SHA-256: 33154cba57dba0d3765c6f5689a6dd6b84af71d983f7d03b2e6f1a7db401f5aa

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