Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d3df4bf0f8708a…

MALICIOUS

PDF

88.3 KB Created: 2020-11-19 19:04:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 90006f1970b47872836c554b8a0c2d71 SHA-1: bfa7cdf647e661bd861279577203cf5721430a68 SHA-256: 93d3df4bf0f8708acba6b7730fe93f5a6bf8e4f5a8338e9b019550bd5628d8ca
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafftec.ru', which is likely part of a phishing or credential harvesting scheme. The document body, though heavily obfuscated, contains keywords related to Android development, suggesting a lure to attract victims interested in technical topics.

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/wb?keyword=listview%20baseadapter%20in%20android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403561/normal_5f96ef12ea340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5fb380038236b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376612/normal_5f96455634f84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416792/normal_5fada87155385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_5fb3c503c5ee7.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/risalenefazozo/google_play_games_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ac8eee1-86f6-4f07-9450-aa5cdc7334d2/96195432223.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fbb4aeb-74d4-4837-b8e0-70e51a473d84/litiwonujuzowitosul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54d15bb1-5461-4f7d-ab36-843d8ba18072/kapovutitafipubipegetupe.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/sovunoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a6a4761-e837-4686-94cc-921ac079687b/61731023364.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_off0001192c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192C 5156 bytes
SHA-256: 96e3267ec54e5106905c8ecae2a009a84bea5ada2ae7296d291097878c46755c
font_01_sfnt_off00012ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD5 13772 bytes
SHA-256: c2fa6ad27cae80f176610a59712cc75e7fa8a313d87f93fb4fd739fedf4b1904