Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a07176cd83067d0…

MALICIOUS

PDF

80.7 KB Created: 2021-03-31 13:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a11bc0415600992415b2753be821cd16 SHA-1: b2660327abd0188204fe1af10eeef732f2791c6a SHA-256: 5a07176cd83067d034f70fddd0d532390825c3567c52fcf6f81ef463e94f07aa
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high probability of malware. It contains an embedded URI pointing to a URL that is disguised as a nursing care plan, likely a lure to trick users into downloading a malicious payload. The presence of multiple external URLs further supports the malicious intent.

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://seumenha.ru/award?keyword=nursing+care+plan+for+depression+pdf
    • http://tryadasert.online/what_does_take_2_tablets_by_mouth_as_a_single_dose_meanx43l5.pdf
    • http://fekowepiz.mywebcommunity.org/bldc_motor_principle.pdf
    • https://cdn.sqhk.co/raxedaninaso/vicihja/43847098428.pdf
    • http://jakartapro.xyz/uyire_songs_free_mp3_downloadlncpg.pdf
    • http://idealicaitalia-official.site/vishnu_sahasranamam_meaningctfxm.pdf
    • https://cdn.sqhk.co/kivipemo/gciihgY/luzelak.pdf
    • https://cdn.sqhk.co/zolokike/lij0Nhc/movistar_plus_apk_android.pdf
    • http://gopadaxin.mywebcommunity.org/acetilcolina_funcion.pdf
    • http://qiwi-wallet.online/59641387087rfpul.pdf
    • http://masimepipet.22web.org/93046098029.pdf
    • http://straponartist.com/pepobuxerimqu7bf.pdf
    • http://redit.fun/12973153004tust8.pdf
    • http://iminn.ru/64804141532ecfmu.pdf
    • https://cdn.sqhk.co/novigigexuxo/ibhjhfR/vaximatajumoz.pdf
    • http://trychambre.xyz/919606901507jfnn.pdf
    • http://ewwe.space/pokemon_unblocked_games_weeblym5ztf.pdf
    • https://cdn.sqhk.co/temetixufuxi/gGlkge9/fogexakiwowidido.pdf
    • http://tipofeliluget.medianewsonline.com/20909856162.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b51f660b-4804-422e-8185-c7517d004505/learn_to_read_hieroglyphics.pdf
    • https://uploads.strikinglycdn.com/files/9bfd8fe8-d515-4234-aeca-5a3ef39e915c/why_doesnt_my_wps_button_work.pdf
    • http://jefuxizimume.rf.gd/45657308697.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_off0000ff26.bin
517caa8150cd2e71571030d6bf88d015656e7440bffcd633cc0064549185d702
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF26 5292 bytes
font_01_sfnt_off0001113f.bin
0f12ec818912fc041d4acb1d4190c29cea0c4bf1aaf2385600bc2a270c41dbcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1113F 11084 bytes