Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b038ba89284cfb8…

MALICIOUS

PDF

74.6 KB Created: 2020-11-14 03:25:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c77c96f632c9ba14da880bdd486a5e9a SHA-1: 913c7fe7521e2c1593fbd8e27eb6b00df2760229 SHA-256: 7b038ba89284cfb88afec85b3ae839eab1ed05d7c57cdf9e30a398da58136d0e
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 0.9998

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://traffking.ru/123?utm_term=before+i+fall+lauren+oliver+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409113/normal_5f9d310f10b3d.pdfIn PDF document text
    • https://xalemewo.weebly.com/uploads/1/3/4/6/134665704/zikujojoberexo-wiwap-nowez-tinimapa.pdfIn PDF document text
    • https://ronisimene.weebly.com/uploads/1/3/4/6/134610282/rujadolugumegiroz.pdfIn PDF document text
    • https://bisojobiregabo.weebly.com/uploads/1/3/4/5/134509607/6056387.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/96be50c9-0fca-41ce-a20c-73c66bc64dfb/89448950476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea428703-d765-4a24-b28b-bd7a3df9a820/wazimonavekokirila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d5078e1-6302-4ab1-8b29-7c95b9f601c8/76094016507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e01cd6f1-d75d-404a-b2b6-5eb077f23a45/58812112334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e987d25-2f5f-485f-9a1a-5f5710788ce3/dobitiwawaxomiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/269981b5-14f5-4bd5-b8bc-faf276421f5b/dizivosulefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed55ef27-c57e-44aa-ae30-11ad7887a02a/virtue_and_vice_fear_and_loathing_in_las_vegas_mp3_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f855e5-3f8e-454a-a4f3-2906fbfc01fa/60326222747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce78b808-88c8-40c4-9d2d-69d6bba9c5bb/kagixenomunazasiliruju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7f0ebf9-aa38-4fa6-a5c3-db0f6101be1b/tiruz.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

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_off0000e6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B6 4964 bytes
SHA-256: 5cbe906dc41f645848ffee99e08640c33228994e0a49c167a18d3893b1135387
font_01_sfnt_off0000f7b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B8 11268 bytes
SHA-256: 0879e6bf6b8fa85631cba0a535d67b2b82dd4d39b17fc4f26d8be52050fe6865

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