Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb3304070d4e0a12…

MALICIOUS

PDF

71.7 KB Created: 2021-05-21 23:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cdd7831cdce08e3deb127c25bdcd7cd9 SHA-1: d826bb9a3dcd9fde86cc7da6e588fb2284b3ba38 SHA-256: fb3304070d4e0a128956a0a61fd57120dc6070960979a49d31923517a2057cd8
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 0.9996

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://dugedepap.ru/strik?utm_term=how+do+i+reset+my+sharp+tv+without+a+remote PDF link annotation
    • https://dapadode.weebly.com/uploads/1/3/4/6/134646205/4047591.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/4045634.pdfIn PDF document text
    • https://pigakuri.weebly.com/uploads/1/3/4/6/134684466/e148584f766b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485329/normal_602f6e2397d95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_6011c72e72b0c.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/6132676.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/4e3477e6-eed5-4a75-b811-0c885e8a3c19/how_the_grinch_stole_christmas_movie_2000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0e22c7d-39bb-4e2d-b876-c79358316af0/wozupopijudidagogiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4206e988-15f5-43ca-a7f4-078c1589ab71/sobikosawezikegas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/162bc7d8-dce5-430d-9480-52198a576929/24648234401.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/nle_choppa_shotta_flow_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c16ade0-dda6-4bd4-a518-02a6eb3b8ed1/how_does_the_book_1984_end.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57aaf82f-ac40-4368-ab6a-7b12a2c6c4cf/garmin_nuvi_2595lmt_specification.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/grim_soul_guide_events.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad41bc76-d955-40a0-b771-986a48c99b65/christmas_family_photoshoot_melbourne.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12e0e5d9-5076-4d00-afbe-58d256d19993/sozinaxetef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa9a7578-78d6-4c2a-9624-2fc76b23d3bf/william_shakespeare_famous_poems_sonnet_18.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb92c1eb-c95a-4e5a-a611-fd1cc690dce4/what_influences_ethics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8ec63b6-8948-4f6f-b66c-fd87d314eb60/the_odyssey_book_9_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/medatakoturumubazudugasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a1f3f7f-ccbc-4f62-805e-60a2ac8e7042/gusilolijizikexosep.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/99711492592.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_off0000dbcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCB 5384 bytes
SHA-256: 5a9882af8731904ee94f3abbeda3d00ad3ef8684f5a2a7d07757bd83367f64e5
font_01_sfnt_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 10244 bytes
SHA-256: 0676739d9256789b126d72e8b2efdafb40cd2654b727491e7a7aded7a38fbb89

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