Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f967dbdfa010c2…

MALICIOUS

PDF

73.8 KB Created: 2021-04-02 20:16:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edd052a965d4d9210faf9f5149182ab8 SHA-1: bead1ba9e621206c2c6373d4e405e9c243ffb141 SHA-256: 35f967dbdfa010c219ae2c60828e19a7ebb6c52bde3cdda2086afc55fd17be5b
104 Risk Score

Malware Insights

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

The file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs and a heuristic for a visual download button suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to initiate downloads or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://golowaki.ru/123?utm_term=beamng+drive+tech+demo+v3
    • https://static.s123-cdn-static.com/uploads/4380871/normal_5fde44e648c7d.pdf
    • https://cdn-cms.f-static.net/uploads/4427509/normal_60421ade3f38d.pdf
    • https://cdn-cms.f-static.net/uploads/4476768/normal_5fd8f599edbe3.pdf
    • https://xadigepuve.weebly.com/uploads/1/3/1/4/131454317/butazolaneweme.pdf
    • http://lnstagramlivesupportcenter.com/mascaras_de_entrada_en_accesspgq78.pdf
    • https://cdn-cms.f-static.net/uploads/4390681/normal_602e31c5bdba2.pdf
    • https://cdn.sqhk.co/mekibekowufe/gjjgdfP/jelivuwanezavikes.pdf
    • https://cdn.sqhk.co/pinofizulag/aha7id4/magic_cube_nicer_dicer_review.pdf
    • http://tijukilebag.getenjoyment.net/73544830182.pdf
    • https://cdn-cms.f-static.net/uploads/4448121/normal_5fd129da275f0.pdf
    • https://cdn.sqhk.co/zukuxenopo/NhbibtY/lonudalakoxujagujijaruful.pdf
    • https://cdn-cms.f-static.net/uploads/4380392/normal_605621e416f20.pdf
    • https://jefamiwufilidiv.weebly.com/uploads/1/3/1/4/131409158/1300334.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • https://cdn-cms.f-static.net/uploads/4379742/normal_5fdc0e708bd35.pdf
    • https://fiwisito.weebly.com/uploads/1/3/4/7/134715438/vufuguwetejej.pdf
    • https://cdn.sqhk.co/mapetidul/sjdfiIk/piwoti.pdf
    • http://xixofafil.medianewsonline.com/automatic_door_lock_system_project.pdf
    • http://movizopolu.medianewsonline.com/fesiki.pdf
    • http://lovewaits.ru/tozikotuxak396cg.pdf
    • https://cdn-cms.f-static.net/uploads/4443595/normal_5fd945095a269.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tikeresepujel.onlinewebshop.net/xasulapuzufolemupuw.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_off0000e045.bin
a05dbdba6ba0f56c8d1dcb6c14c889ca6084c2113a673d059dd300752ac81844		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE045 5416 bytes
font_01_sfnt_off0000f296.bin
fad5bdf937201bf3e9df18bd5823aad84cab913e92d81b4047e5c48c7594ef3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF296 11112 bytes

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