Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3f993393701291…

MALICIOUS

PDF

108.8 KB Created: 2021-03-27 19:45:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54cb0ca2c00c1d5a1dbb83645d6596a0 SHA-1: 510544b0a2e050694c621809c9d39b5ce9c130c8 SHA-256: 2c3f993393701291b73b88f89dc3662db6f80ce0f2e6cb1e6ff77ca90189aa31
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 attempt. It contains embedded URLs that likely lead to further malicious content or phishing sites. The document body, though heavily obfuscated, suggests a lure related to 'worksheet answers', aligning with a phishing attack pattern.

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://zajinet.ru/wix?keyword=dna+the+secret+of+life+worksheet+answers+quizlet
    • http://sumodena.getenjoyment.net/atomic_structure_physics_ncert.pdf
    • http://zobabikox.medianewsonline.com/fundamentos_do_candombl_ketu.pdf
    • http://nawavidosuk.medianewsonline.com/appareil_gnital_de_l_homme.pdf
    • http://xevedudox.sportsontheweb.net/86497487253.pdf
    • https://cdn-cms.f-static.net/uploads/4367905/normal_6028667043fff.pdf
    • https://cdn-cms.f-static.net/uploads/4424692/normal_605cfe5ea3dff.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/00e1388e-0010-4756-9da5-7381ea39c0ed/a_blank_person_is_one_who_is_not_direct_and_straightforward.pdf
    • https://uploads.strikinglycdn.com/files/cbdf160c-903c-463c-90e9-9e1eea99fa7e/troy_bilt_pony_riding_lawn_mower_price.pdf
    • https://uploads.strikinglycdn.com/files/a332b86c-ba15-45e9-8932-4fbc43f0c50f/maintenance_engineering_handbook_r._keith_mobley.pdf
    • http://senosepuduliz.epizy.com/another_word_for_wild_ride.pdf
    • https://uploads.strikinglycdn.com/files/734ce3ca-ab76-40cd-aa55-52b6329616cf/list_simple_safety_devices.pdf
    • https://uploads.strikinglycdn.com/files/1dada6bc-56db-4d19-9844-9c5df1fc0b52/4706425760.pdf
    • https://uploads.strikinglycdn.com/files/7fc2a11f-6e13-4a9f-a7ea-caf0f2b9ea43/38864838837.pdf
    • http://sarebabeb.epizy.com/vasom.pdf
    • https://uploads.strikinglycdn.com/files/3409c3ec-27e8-4392-ab4b-454d77df69ed/raxaxo.pdf
    • https://uploads.strikinglycdn.com/files/44afa52d-4469-4d30-b777-7a85772ffae1/how_to_spot_a_fake_national_insurance_card_replacement.pdf
    • https://uploads.strikinglycdn.com/files/3c43d2a6-e2d3-4bbd-9ab1-2c50ee3cb48a/63958745239.pdf
    • http://figezevaju.rf.gd/indoor_air_pollution_sources.pdf
    • https://uploads.strikinglycdn.com/files/fad8fb95-39d8-4fd9-b6fc-0191df215887/how_many_exercises_for_a_full_body_workout.pdf
    • http://tixuxunu.epizy.com/31693589044.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_off00016e44.bin
0417c8033b90e75d828deccf4a39c898891d2ed6c176fe1328c7bc7c12bdfe26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16E44 5300 bytes
font_01_sfnt_off0001806e.bin
3c09d202d2f23d5ee3cf4442e64fb7aa44e8c0bb0243a017f004e0f5debe1a0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1806E 10948 bytes

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