Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd70cc8aeabecdf…

MALICIOUS

PDF

69.1 KB Created: 2020-11-17 21:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 309d53c0923337dcb60711a9a40eba5e SHA-1: e6366c3844ac2beb086e299d4894da67f2967584 SHA-256: 8bd70cc8aeabecdf2452377aabce01847b146fcc6b79a289fd056d86696d8f7a
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 phishing or trojan payload. It contains an embedded URI pointing to 'https://trafftec.ru/123?utm_term=area+code+503+location+canada', which is likely the malicious destination. The document body, though heavily obfuscated, contains text related to 'Area code 503 location canada', suggesting a lure to entice users to click the malicious link.

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://trafftec.ru/123?utm_term=area+code+503+location+canada
    • https://cdn-cms.f-static.net/uploads/4421058/normal_5f9ba02e0451f.pdf
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5fa17fa76ffb3.pdf
    • https://cdn-cms.f-static.net/uploads/4373753/normal_5f8a24d3a3b44.pdf
    • https://cdn-cms.f-static.net/uploads/4428329/normal_5fb400948d92f.pdf
    • https://cdn-cms.f-static.net/uploads/4420617/normal_5faf0f0e7d47c.pdf
    • https://cdn-cms.f-static.net/uploads/4459624/normal_5fa868888e613.pdf
    • https://cdn-cms.f-static.net/uploads/4451208/normal_5fa0c9de172e4.pdf
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f88074dcca10.pdf
    • https://cdn-cms.f-static.net/uploads/4404503/normal_5f9f79785db2f.pdf
    • https://cdn-cms.f-static.net/uploads/4463565/normal_5fa318146bf2d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/481bb032-1fb8-4aae-b52e-bfd112ef0b2c/five_night_at_freddys_unblocked_gam.pdf
    • https://uploads.strikinglycdn.com/files/293fb692-ea31-4d5a-9b5a-8f72f2a53b9c/bafozojigise.pdf
    • https://uploads.strikinglycdn.com/files/b09ce6f3-1110-46f0-85b0-9c1d43f76b07/vepudedoxigutowize.pdf
    • https://uploads.strikinglycdn.com/files/0d9d10a9-5b51-45a5-b4dd-2dfd38f4418f/murikarolijuwukufegax.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c625.bin
7d4941bc4b3406dcb3a23e7b73f29f564298d88324b2a3fc504c13bafaece01a
pdf-font-stream PDF embedded font (sfnt) at offset 0xC625 4964 bytes
font_01_sfnt_off0000d706.bin
fd4d58a7eac25ceb4c935191b7f382d501597745e1eece88aee93290ebff20dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xD706 9948 bytes
font_02_sfnt_off0000f926.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xF926 4324 bytes