Malicious PDF — malware analysis report

Static analysis result for SHA-256 70bd6912a04a388e…

MALICIOUS

PDF

78.5 KB Created: 2021-05-20 10:34:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4ba96de8c2ac003d8080b13ac0c6561e SHA-1: 28ce2b5fa2d53bc3a631b913f97417f68ac80496 SHA-256: 70bd6912a04a388e5722a6ab113037047f197cab9e0310fbc2eed228adfc67ec
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'zoo activities'. No scripts were extracted, but the PDF structure itself facilitated the inclusion of the malicious URL.

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://jumiwimov.ru/strik?utm_term=if+i+ran+the+zoo+activities PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392209/normal_5fd7b9e7b2c82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379611/normal_604b2147a705c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421201/normal_604b1b1361118.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469617/normal_5fec0e9098970.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365541/normal_5ff25c8d16c45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448556/normal_603c5430a69cb.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/b8160c6c-9f39-4635-9647-9ed6ff2346dd/35228149539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d67cbeaa-4f14-4181-959d-b61b47e3d6e3/vadinuronedagowanep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eb4befa-609d-45a6-9cdd-276d1045ff9d/meade_etx_125ec_telescope_price.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/28912392948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aa6ed6f-6339-42a1-aac4-a180a993e3a1/dusadowuzan.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/consumer_reports_best_and_worst_cars_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98ed7242-73db-432d-8a34-54db88169e79/52815050525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c1d1861-8f57-44e2-88d6-4e3ea5ca1f74/48309881486.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7ca3b7-e742-4c08-8391-36968fcb2166/char_broil_infrared_cooker_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edaccfc4-cd49-453d-ab97-49b67be67c43/stellaluna_read_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a44f946-a561-4851-be43-70d567c3834a/what_is_the_hurricane_on_jupiter_called.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36F 4984 bytes
SHA-256: 6355b0f54f447accfb52e677978a18bd465121fd9865e1d3939fa81d694dfb4b
font_01_sfnt_off0001046c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046C 11456 bytes
SHA-256: 31910f90e0a094a9fc84f040354a9f6a0f48772ebc26d69e936e9ab543cce41b

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