Malicious PDF — malware analysis report

Static analysis result for SHA-256 95560be5e06397fc…

MALICIOUS

PDF

76.1 KB Created: 2021-06-01 06:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f59baabd663ebc7a5fdd445f9cc9a59 SHA-1: d14a42bf2585f7db52f5acbc04c59612002ebc29 SHA-256: 95560be5e06397fc454aa74231b037831b7a3ffcf7e09168825047c74339cbaf
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 a URL that is likely part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to educational materials.

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://ketchas.ru/pbw?utm_term=les+pronoms+possessifs+exercices+cm1+pdf
    • https://cdn-cms.f-static.net/uploads/4460982/normal_601a007988a53.pdf
    • https://cdn-cms.f-static.net/uploads/4366982/normal_6025133a21c58.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fddbed15-a1e6-43b4-9c69-47ce52a3f3f7/80464383790.pdf
    • http://didaneguk.pbworks.com/w/file/fetch/144428997/how_to_pass_your_cdl_permit_test.pdf
    • http://rujuboxu.pbworks.com/f/44911943320.pdf
    • https://uploads.strikinglycdn.com/files/89dfdc13-6bed-499b-8311-e02c5de74a17/vukaboburutone.pdf
    • https://uploads.strikinglycdn.com/files/41051e83-037b-4a56-81c7-0b52bea302e8/30601457445.pdf
    • https://uploads.strikinglycdn.com/files/309aa30c-d8cd-4840-bdd2-f7ece937f41e/xuxusovuxijezipozipefad.pdf
    • http://zeladejan.pbworks.com/f/what_temperature_do_you_put_a_ham_in_the_oven.pdf
    • http://bupataved.pbworks.com/w/file/fetch/144420834/writing_algebraic_expressions_from_word_problems_worksheets_6th_grade.pdf
    • https://uploads.strikinglycdn.com/files/14c28939-eb02-45c6-b48c-5fffc69cdc53/what_are_the_different_types_of_laser_eye_surgery.pdf
    • https://uploads.strikinglycdn.com/files/05bc9b3a-7337-49cf-8ea4-6f7d69bbaedc/zepewavarafafadapa.pdf
    • http://risoxef.pbworks.com/w/file/fetch/144436827/how_to_set_time_on_lacrosse_atomic_clock.pdf
    • http://tisowowuduwe.pbworks.com/f/28106939969.pdf
    • https://uploads.strikinglycdn.com/files/9e7aa404-c27a-4943-ab78-84e81c57f1ce/kezirikinexaxivasijadozez.pdf
    • https://uploads.strikinglycdn.com/files/9358d5e3-24d1-416e-bafa-4fd0dbbb727f/how_much_weight_can_a_bench_hold.pdf
    • https://uploads.strikinglycdn.com/files/05e184d2-2724-4142-9cd6-c2bd1e632508/85554122430.pdf
    • https://uploads.strikinglycdn.com/files/f77d8654-9f5e-4e20-b2cb-dd3f3f237177/1_grade_worksheets_free.pdf
    • https://uploads.strikinglycdn.com/files/daf6ec68-58f5-4eca-8735-caadf2472448/fofivufujibadevadaw.pdf
    • https://uploads.strikinglycdn.com/files/3de12450-af68-43d3-8ba7-74b86b3df20a/mafizugajuzibujude.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e72a.bin
60aa847cade7bbf4e2eb9695c499900635e79fdb2045848be688d5b5892f3fa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE72A 5120 bytes
font_01_sfnt_off0000f894.bin
1e5d9429ff0ac9c0f4d60523efb1229c60bca3baff29b2abdda239fd9bbeb7dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF894 12664 bytes

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