Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e5de5d07cbe127…

MALICIOUS

PDF

77.5 KB Created: 2021-03-14 18:29:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 239ad2112fca5e93e92d80c441d13755 SHA-1: 1edfe3fe20189beb7df7d6ca93556356e7068517 SHA-256: 99e5de5d07cbe127b66a90a4e700c02a0b471f3649a77242357925acfb789e3d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and document body text suggest a social engineering lure to trick users into downloading software. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used for malicious redirection or exploitation.

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://jumiwimov.ru/strik?utm_term=download+addictive+drum+2+full+version+single+link
    • http://scrlt.xyz/28379264876g6v71.pdf
    • http://lotsmen.com/el_alquimista_audio_libro_de_paulo_coelhoc6f8s.pdf
    • https://cdn.sqhk.co/rasepotobami/Fijyggu/the_ramen_sensei_2_mod_apk.pdf
    • http://workmonster.net/jijapupusonewobisou1m16.pdf
    • https://cdn.sqhk.co/rorajakura/gdijdrF/doom_eternal_dlc_1_release.pdf
    • http://warixedivukinat.mygamesonline.org/rcbs_chargemaster_setup.pdf
    • https://cdn.sqhk.co/duzoxibuf/gjcpjdu/49312590298.pdf
    • http://lunagogafoxoj.sportsontheweb.net/77407629766.pdf
    • http://ing-cliente.com/cells_vba_sheetrxwb7.pdf
    • http://tadosuzewamu.medianewsonline.com/49565763020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a3524c69-3c9f-4eae-a85d-e5812af56d81/asp.net_core_video_tutorial.pdf
    • https://s3.amazonaws.com/dinigugaxej/rasagufik.pdf
    • https://s3.amazonaws.com/mexijegedakol/guided_breathing_meditation_for_sleep.pdf
    • https://uploads.strikinglycdn.com/files/6b55981f-20f6-4d1f-becc-6d495f9c8473/dell_inspiron_17_5000_i7-6500u.pdf
    • https://uploads.strikinglycdn.com/files/a6e256d1-ff9f-43c1-8980-5800bbe5544a/how_to_disconnect_a_hardwired_firex_smoke_detector.pdf
    • https://uploads.strikinglycdn.com/files/bcd5773e-8380-40d7-88a8-e050a665df2d/42694790460.pdf
    • https://s3.amazonaws.com/jalasilunaz/42603570026.pdf
    • https://uploads.strikinglycdn.com/files/c0ee8fd7-eeb9-4961-8930-a3a6077272be/how_to_check_covid_19_test_results_online_abu_dhabi.pdf
    • http://wotidupodugi.myartsonline.com/pujekorosijozekojesuvapud.pdf
    • https://uploads.strikinglycdn.com/files/ab336a4e-d9af-44ad-94a5-bb2f93f9655b/68697224456.pdf
    • https://uploads.strikinglycdn.com/files/68f5ccd6-cc11-46e5-8af7-40a6773f04e5/gixaripajolimusopagarelo.pdf
    • https://uploads.strikinglycdn.com/files/d372c533-3c63-4a98-92f0-ca5e145422db/massey_ferguson_65_parts_for_sale.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_off0000eef9.bin
50416c80ff9c12ced0770a458a658c14ae064001fc47448607293c65cccb415e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF9 5688 bytes
font_01_sfnt_off0001026c.bin
44545fa3f4ae58a85f6fbcc67c6d28ecf497a2e7c79a8a515c53eacf5a8bb118		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1026C 11068 bytes

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