Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1895eecf6e232f…

MALICIOUS

PDF

70.1 KB Created: 2020-12-30 12:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 57d066c62288ddeda793de5494055f2f SHA-1: 7dba17c7626aa503674c78b1190dec34b4c54e0e SHA-256: 7b1895eecf6e232fe3ad050feeb44c0f697f87542770020be2667796edac8cb1
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of embedded external URIs, such as 'https://trafffi.ru/123?utm_term=national+museum+of+commercial+aviation', suggests the document is designed to redirect users to potentially harmful websites. No scripts were extracted, but the overall structure and heuristic firings point towards a phishing or malware distribution attempt.

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://trafffi.ru/123?utm_term=national+museum+of+commercial+aviation PDF link annotation
    • https://jakuxilo.weebly.com/uploads/1/3/4/7/134711712/b6433de84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384325/normal_5fa33d2dac85d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5fa7887446f5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_5fa68f1ed04f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408989/normal_5f978c2ea551e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482418/normal_5fc2a8ea4f16e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449987/normal_5fdfbcf16d7a7.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/sasufufa/javapekosagupojaxej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e94dbcb-defb-4938-966d-b04cad12e448/user_manual_for_cuisinart_ice_cream_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16632427-7581-4f5f-94d6-b7e3d5a72072/pudolitoxunafav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a710e468-adf7-46ed-81e8-61b620601358/74370094134.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_off0000d5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F2 5056 bytes
SHA-256: 114b660422d380f98f4e284eb97f79c082883028d7b3ba37ea3adedf3b8334b4
font_01_sfnt_off0000e71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71F 10716 bytes
SHA-256: bd3ca238aac569f7a412a62bd99186f0fbb7f50eb99a9f29c35f6871cf87645b