Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0e5d002cda02b13…

MALICIOUS

PDF

84.9 KB Created: 2020-12-15 07:17:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a8c949449ed149990489d68d2ee37735 SHA-1: ecb583a34f3c477242610fea668be69547afccb3 SHA-256: b0e5d002cda02b13e3f4fe1b2b96aa59ab8a0098a7f53f21930c893fb18c4048
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, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'traffnew.ru', which is likely used to host a malicious payload or redirect to a phishing page. The document body, though heavily obfuscated, suggests a lure related to educational materials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/123?utm_term=algebra+challenge+problems+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389104/normal_5f8f97d14ac83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464739/normal_5fd3690f4fb02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424647/normal_5fa4be08f15f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410988/normal_5fab3a976506a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/eff544f4-fe63-485c-ae33-aff28fb52a6f/jipezej.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd131452f90b7fe52ecb/t/5fcf6e40ba7003536eab8d81/1607429703659/43191024126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fb9b66d-cbfc-417c-8847-98f40181034b/mesa_middle_school_castle_rock_bell_schedule.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc788c9791da6493f6aea64/t/5fd718a1034a586a4f5be052/1607932066646/54687921232.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1858bf7cf8c75402f5531/t/5fcf4c2b05f6f2780756ecfe/1607420977691/lexia_reading_core5_level_9.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc135a327a199023ab76298/t/5fc5bc49145a8629dc781c20/1606794316173/fofaka.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d2f2d26ff1194f734ddd/t/5fc91204381c0b73fd1815ea/1607012868982/nosezilitalefoxadok.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc165e488c99b6d37aa9f7e/t/5fc727483ac9c763f4d1ebe2/1606887242767/glider_simulator_cockpit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc687f5df132613bbe462d8/t/5fc862ffd6e0cc37e33b5943/1606968069050/riworaxojemule.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/87180839059.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF512 5372 bytes
SHA-256: 5be2f9a9070f5b59290cd172ecaa9a593ef4173631ca3afbceb0176637fd9a79
font_01_sfnt_off00010725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10725 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off00011287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11287 10996 bytes
SHA-256: 4ae555713a7a7c2ae65a78f208ab7f57f4684b664d93e653082a3ed50b4500f4
font_03_sfnt_off00013823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13823 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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