Malicious PDF — malware analysis report

Static analysis result for SHA-256 a320377186de0350…

MALICIOUS

PDF

78.3 KB Created: 2021-02-22 21:49:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 863c6d0f2052193c7f120b82e9116cf9 SHA-1: 589db048b2bb8e30663b39bfc89975ae1c6082cd SHA-256: a320377186de035089832566674bdb94a7174a265a5d6f7d45229bd05a5ed158
104 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a download page, likely intended to trick the user into downloading malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=sniper+3d+assassin+cheats+without+human+verification
    • https://cdn.sqhk.co/sujutowupolu/fmLggPj/sepekamokebakaxutojujoza.pdf
    • https://cdn-cms.f-static.net/uploads/4383804/normal_6019751daf54b.pdf
    • https://cdn.sqhk.co/nobukomorur/Uibhb5J/femebu.pdf
    • https://cdn-cms.f-static.net/uploads/4449405/normal_6030091f84446.pdf
    • https://cdn-cms.f-static.net/uploads/4479224/normal_5fd1733a54558.pdf
    • https://static.s123-cdn-static.com/uploads/4393018/normal_6003d07c30660.pdf
    • http://top-salez.site/hbr_guide_to_buying_a_small_business4gb7k.pdf
    • https://static.s123-cdn-static.com/uploads/4473062/normal_5fc9246572ede.pdf
    • https://static.s123-cdn-static.com/uploads/4426945/normal_5ff29ec3c6429.pdf
    • https://cdn-cms.f-static.net/uploads/4449987/normal_60287ba344583.pdf
    • http://tersq.fun/beano_comic_libraryzpygt.pdf
    • http://hugertely.xyz/bluebeam_serial_number_and_product_key_crackkyi83.pdf
    • https://cdn-cms.f-static.net/uploads/4389576/normal_5fe66e6362ec8.pdf
    • https://cdn.sqhk.co/kixagixupo/eYBrp18/arcade_roller_coaster_near_me_open_now.pdf
    • http://levelupguild.com/947132448572bqhh.pdf
    • http://shop-onlain.fun/advanced_dental_biomaterialswogiw.pdf
    • https://cdn-cms.f-static.net/uploads/4447097/normal_5fd28a5ca1495.pdf
    • http://hotita.space/murray_riding_mower_deck_partsrxfil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1db.bin
d5b5740fcd853e9a192367b10f21d67905665816d747a6740de818695e019cc8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DB 5284 bytes
font_01_sfnt_off0000f420.bin
30904436a4f224b80049432b3713ef65cb5e77ca61e079776cff6ce62e2f26dd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF420 5784 bytes
font_02_sfnt_off000107c2.bin
5ab85f8ae0c676b9e0a68c506d8fc3c153647b6343e0dd515b3ee9feb256935c
pdf-font-stream PDF embedded font (sfnt) at offset 0x107C2 10472 bytes