Malicious PDF — malware analysis report

Static analysis result for SHA-256 8077dc4d0cc2fb88…

MALICIOUS

PDF

62.9 KB Created: 2020-12-17 06:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c226d29e75eaec621045627823d495fb SHA-1: 7c12f66b61c39ac7ae4f1ae7c1b1d9755ced33c7 SHA-256: 8077dc4d0cc2fb88018174c0b88fe936ac9365276108769e2a2cc87d9788f425
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafftec.ru' which is presented as a download link for a 'ram expander', a common lure for phishing or malware distribution. No scripts were extracted, but the presence of the malicious URL and the overall detection strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/123?utm_term=swapit+ram+expander+apk+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446781/normal_5fbad09132624.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416792/normal_5fa1bfcc78e95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f98c41162bc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446944/normal_5fa9bc46477d8.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/6d547b1a-37f3-43fe-b282-6392dfb83ec0/iphone_xr_battery_charging_case_apple.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4c503485235c86bcb387/1606372434297/74025234011.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc599ce0a2757459b02e715/t/5fc8b53813f8d93bf20b4303/1606989113422/dijegepiworekezarefeneb.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/58421608301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab788d34-76c8-473b-b3d0-b0198f49d7f4/chatham_county_nc_arrests.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/739dc416-df72-4546-8ab6-4b8bfc37c7b0/quince_minutos_con_jesus_sacramentado_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ef11dc-f434-4e0e-af25-f1edd9910d9e/40283512893.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/dvd_menu_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7afd735-961c-4235-9d7e-77a45ccd18f8/romeo_and_juliet_timeline_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21a409cf-b572-4158-b90f-fc8a16abcda1/sujarobukanaji.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_off0000b907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB907 5336 bytes
SHA-256: 131b8efaf40b39ece51c2d5708428b4ba5c3f5bafb208501c61321ebbb079b6e
font_01_sfnt_off0000cb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB33 10328 bytes
SHA-256: bc62fdc5299c5a54f6738a51cedb4eac002d9feb2280d953e9ffee532b7cfc12

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