Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dee3c3c20e3a956…

MALICIOUS

PDF

82.0 KB Created: 2021-04-27 19:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 36fa741c67d75458f17a3d9c0a7d5c0e SHA-1: 7508aa2b208aa5311863af58fe45a188984b0f85 SHA-256: 3dee3c3c20e3a956bdeeff262dfc43ac4000b8f64b412fdf99d1b9a28f9cccdf
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is malicious and a phishing attempt. It embeds a URL that, when visited, likely leads to further malicious content or a phishing page. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://ponafet.ru/strik?utm_term=how+to+run+clean+cycle+on+washer PDF link annotation
    • http://shoppingyxplus.xyz/guwerumidejabapxbpzq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_6022450dd5229.pdfIn PDF document text
    • http://7gusevshop.space/master_forge_electric_smoker_heating_element0dwwg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447460/normal_601cdb24bd54a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380854/normal_60089e951df62.pdfIn PDF document text
    • http://stroiline74.ru/final_cut_pro_x_tutorial_20205jvl3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465133/normal_60387f4393507.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://be1d055c-b83b-422e-9e68-1bf13cef350c.filesusr.com/ugd/5b1e3c_2eab4b3bef2540839f1dbc4a86600d96.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/narak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616a7883-9760-4e84-9468-68d859f515db/vivamowalunizirupanoj.pdfIn PDF document text
    • https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_ac81655875c242c489577af4de928420.pdf?index=trueIn PDF document text
    • https://0520cbdb-e423-47b7-967a-ea126b9480bf.filesusr.com/ugd/e54fc7_e770dd0ddea243e08c522c8c47a91206.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/classifying_nouns_worksheet_grade_1.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/35229279123.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/73856378219.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d6d350d-6034-4304-a2ee-b3e2bef3b143/do_you_soak_the_wood_chips_before_smoking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9171567-81d1-4e6e-a519-26d6da2c9abc/personajes_de_perdona_si_te_llamo_amor_espaa.pdfIn PDF document text
    • https://e0bfa911-60eb-4c53-bd8d-ceec25156dfb.filesusr.com/ugd/0a052f_2401b858b6174ef2959deef8c74a22b5.pdf?index=trueIn PDF document text
    • https://35548484-ce42-4b18-9d9d-834326683263.filesusr.com/ugd/a221b6_1f3c42ed9b8e43dfa7a4f628a8d97ebc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed564c9-1905-41ac-acad-4b4b7fb882e1/8010836427.pdfIn PDF document text
    • https://f3dcd8e3-6656-4b47-a81e-a993d3c4f2a1.filesusr.com/ugd/aa9ef2_c1fec1dc298746159bb59975d7f88397.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_off000104a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A2 5044 bytes
SHA-256: ef216dc6dbf482498d508cbde38e6b5cbc77e49a4f69e9a4d7addf5bcdfd44b5
font_01_sfnt_off000115d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115D3 10808 bytes
SHA-256: 619a8855e483eadfbd975a4e8c1a163ecd2cf6f70ca392963807837fd1156473

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