Malicious PDF — malware analysis report

Static analysis result for SHA-256 344609503f528703…

MALICIOUS

PDF

77.4 KB Created: 2021-03-06 06:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 11eeb96b62e93155f3275fe8866fbeda SHA-1: 53f49025483fc6912f1facc2b14eeeac8f216805 SHA-256: 344609503f5287035126121a4e16f9c8c9d0e68917fc97f6219c624a9caf812e
186 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 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/123?utm_term=octavia+butler+parable+of+the+sower+review PDF link annotation
    • http://triple-doska4.club/how_to_add_nvme_drivers_to_windows_7_isov2iee.pdfIn PDF document text
    • https://debefapedokofip.weebly.com/uploads/1/3/4/3/134373265/4129bda9f5ea17.pdfIn PDF document text
    • https://lotunesu.weebly.com/uploads/1/3/0/9/130969364/8352984.pdfIn PDF document text
    • https://vipelunova.weebly.com/uploads/1/3/2/7/132712034/xetaxepake.pdfIn PDF document text
    • http://health2health.online/kabibugidalwrcp.pdfIn PDF document text
    • http://triple-doska6.club/spanish_prepositions_of_place_worksheetocfk6.pdfIn PDF document text
    • https://muxoramosuzuveg.weebly.com/uploads/1/3/4/2/134266249/b05000829d455.pdfIn PDF document text
    • http://gavediteriremuv.medianewsonline.com/sony_str_k790_remote_control.pdfIn PDF document text
    • http://rusadezebep.mygamesonline.org/9228038257.pdfIn PDF document text
    • https://bajorenurelop.weebly.com/uploads/1/3/0/7/130739037/tivoru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://de315c38-daa2-4293-b666-e554ba9b7d65.filesusr.com/ugd/564d2e_e2570e33a58e4d46bbbc6dca1785a05f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/66ab231c-f8d5-4369-9e17-62bac0c55aea/xigogom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e47338d-00bb-410d-9785-6c2f9eec0c1a/masterbuilt_electric_turkey_fryer_and_seafood_kettle_recipes.pdfIn PDF document text
    • http://gakilasefit.myartsonline.com/john_deere_lawn_tractor_service_near_me.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/34433340732.pdfIn PDF document text
    • https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_f0058ebf784d45bcad0368029768f5ff.pdf?index=trueIn PDF document text
    • http://dejibokakar.onlinewebshop.net/what_is_the_scout_pledge.pdfIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_b32d948ef82d43afb6d21b47a7e01fe9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a736aa6-9b27-431c-848a-fcce9bac7c4a/fekojedafokowaxub.pdfIn PDF document text
    • https://b23183eb-b2e5-455e-bc25-91fac1efd10f.filesusr.com/ugd/cc14e4_ea9a94fe0d144af9b220bf3a8b1abb77.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29D 5420 bytes
SHA-256: 2ca2c7e56b5516adf348a0702d09441a09a8b35b917bd21df4f02e15c9b0240c
font_01_sfnt_off00010515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10515 10296 bytes
SHA-256: 89e6fd5bc153a4136552bfbd5c85d5c15437f96d2ef5fae0d77ef008b3b84440

Open this report in the interactive analyzer, or submit your own file for analysis.