Malicious PDF — malware analysis report

Static analysis result for SHA-256 93806676339e1200…

MALICIOUS

PDF

98.2 KB Created: 2021-03-16 21:36:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bafd20b0999c61e4330780094bed7406 SHA-1: 7b880ba5ad90cff52c8b0588f791b6a74e56d12f SHA-256: 93806676339e1200d12e219080260be86d6244958d434067cbb0c799f4540e08
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The PDF contains a large number of external links, many of which are hosted on dynamic DNS services or free hosting platforms, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly support this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/strik?utm_term=disclosing+agents+for+plaque
    • https://nonejazusedebe.weebly.com/uploads/1/3/6/0/136099570/vuxujusofeguwi.pdf
    • https://senamevab.weebly.com/uploads/1/3/4/6/134689233/6261605.pdf
    • https://babanude.weebly.com/uploads/1/3/4/0/134017813/e436c445ede95.pdf
    • http://fejiximodanu.mygamesonline.org/55112385392.pdf
    • https://difekubo.weebly.com/uploads/1/3/4/7/134714923/a50bab5c7693b.pdf
    • http://tikutajufa.22web.org/fractured_but_whole_toilet_guide_pc.pdf
    • https://mifurujuxix.weebly.com/uploads/1/3/3/9/133997148/92252.pdf
    • http://xoxuvajes.mywebcommunity.org/astrological_aromatherapy.pdf
    • http://zemegulobeka.iblogger.org/60663841283.pdf
    • https://xowonijateroz.weebly.com/uploads/1/3/1/3/131380337/sekifotir.pdf
    • https://dedemapisiwopiv.weebly.com/uploads/1/3/0/7/130775251/2516374.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c370dac7-4848-4fa0-a6df-94361299e8ba.filesusr.com/ugd/fa6303_cd950a66da48427ca9810e64065ef5c2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6964bf3e-6cc9-4e42-a379-6e6ef8711ed4/how_to_use_gossen_luna_pro_light_meter.pdf
    • http://pizuzol.onlinewebshop.net/6723272617.pdf
    • http://safatagikev.rf.gd/buxupu.pdf
    • https://uploads.strikinglycdn.com/files/b4017b54-a8aa-456c-9b68-a3510936dc7d/kopizuli.pdf
    • http://lokimutopilar.epizy.com/snaptube_app_apk_for_pc.pdf
    • http://vemusimovoxodan.rf.gd/hamilton_beach_coffee_maker_error_code_e07.pdf
    • https://6baea7ca-81e4-4a11-8410-716433a99462.filesusr.com/ugd/764aaa_955d59f6522d4f5f930584753a1ef3b4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e75e11f1-12ca-4626-93b6-983716a30ba4/wojadelapagavitobij.pdf
    • https://7737876a-f762-42ef-af6f-18b78abacabf.filesusr.com/ugd/9066bd_835d6e057d124aeeaaf874437b6d4e1e.pdf?index=true
    • https://8fa10226-37c2-454d-bd65-ced70ecbf0c4.filesusr.com/ugd/c34aa9_8e77eb62fc86484f8fe6dcbb00354869.pdf?index=true
    • https://ae9cd3fc-a2ed-4114-aa96-dd53a7e96ab4.filesusr.com/ugd/22cbe6_43c996c621e14019ad91a6fc8243cdcc.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013640.bin
4606be27f8ea9d91054782d407012e8bac30af3ca81dd8068c6bdce1d592a996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13640 2328 bytes
font_01_sfnt_off000140d4.bin
106c5eaa597c5bd8ae5c63a569bec8557faa590a831fb2319d03e662883d4862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140D4 5308 bytes
font_02_sfnt_off000152fc.bin
dc81e7603254733476824368aab6c3518493c04a11ea3213b5e3b64f8531d67f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152FC 11776 bytes

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