Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36dfc9cc000e3c5…

MALICIOUS

PDF

62.4 KB Created: 2021-02-11 13:54:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0818323f5749432455f54d9fd65a80db SHA-1: a942098acbec8390d1fd51131759cdb7c2cff05d SHA-256: f36dfc9cc000e3c584e2cc3779a4fb3b87f5c80f4d6eea449a03ea05df8cc841
96 Risk Score

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/aws?utm_term=tcs+bancs+digital+platform PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384469/normal_5fcf83363f240.pdfIn PDF document text
    • http://cryogen.me/a-_100_basic_aviation_safety_answerspcxgi.pdfIn PDF document text
    • http://wosurijegu.22web.org/determining_capacity_to_give_informed_consent.pdfIn PDF document text
    • http://eeuuurrrrr.space/59212806785fktn0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_601dc939b6db6.pdfIn PDF document text
    • http://itfamily.info/rewovetoxalimuufyvo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459791/normal_600ac7dda9b7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445104/normal_5fd2f02575ab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379359/normal_5fd6ee656005e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/toguvaju/cubital_tunnel_syndrome_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/personification_worksheet_3_answer_key.pdfIn PDF document text
    • http://texepeduluge.epizy.com/antariksham_telugu_movie_free.pdfIn PDF document text
    • http://jikusona.rf.gd/canada_food_guide_pyramid_2017.pdfIn PDF document text
    • http://larazeratu.epizy.com/55882928606.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/11898729160.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/jireragizurigelizugutol.pdfIn PDF document text
    • http://tivogowajap.epizy.com/free_beach_sunset_pictures.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_off0000b83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB83A 5564 bytes
SHA-256: 366c173b0c4204924b76cf232bc619401ff0578b77c056b899418d38e1d46184
font_01_sfnt_off0000cb10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB10 9776 bytes
SHA-256: e03298348f048af5c4b1aac6602514694230182f512a3057b01d5c9d3272f143