Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4433b8cf8a16dc…

MALICIOUS

PDF

94.3 KB Created: 2021-07-25 12:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 34c6ea46e68cf5e5d97ff7b6c415ed65 SHA-1: 67ddddecd43284145ee65b8bff93e9fcf6f8c3d9 SHA-256: 9d4433b8cf8a16dc3f1a5c7af74aab676636ab55b3abaaaad8b5d0627cdfab28
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF document was flagged by multiple heuristics as an advance-fee scam lure, presenting language related to lotteries, prizes, and parcel delivery requirements. It also contains numerous links to potentially compromised websites, suggesting an attempt to redirect users to malicious content or phishing pages. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://stsaischoolamritsar.com/slbdavbatala/userfiles/file/50405454517.pdf
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/fasijeratufigos.pdf
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a068e165a6c---59828651784.pdf
    • http://ibtaker.ps/userfiles/file/29545377753.pdf
    • https://n-zvuk.ru/upload/file/lubetasamavawuwa.pdf
    • http://aquatrustfina.com/userfiles/file/47187805754.pdf
    • https://tigercabinetry.com/wp-content/plugins/super-forms/uploads/php/files/f909555671bd82f00896b22165d5f47c/penug.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160aaa5e351d63---wejolovatode.pdf
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/wuvafokusesajalel.pdf
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/15746dad3d91a8074278e94f05d80b23/xonojivelevepolanoraxulu.pdf
    • http://lakesideterracecondo.com/clients/41361/File/77445204484.pdf
    • https://cafesca.org/ckfinder/userfiles/files/5099687653.pdf
    • https://avistravel.ro/userfiles/file/nibaxaxufexavigametelem.pdf
    • http://mexxeopaint.com/upload/files/sotadukufepujezakatid.pdf
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160805a7b5838b---dumunurojir.pdf
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/7c22fc81b0ce3b49233052dead58a930/75461189401.pdf
    • http://abc-tel.ru/data/File/kadegotixarax.pdf
    • https://harrisitalia.it/uploads/file/70152134497.pdf
    • http://kolesnikov.pro/ckfinder/userfiles/files/31191393630.pdf
    • https://acgroupenterprise.com/userfiles/file/19323540341.pdf
    • http://twfindia.in/userfiles/files/13732995649.pdf
    • https://wecareu.net/ckfinder/userfiles/files/poxinalewax.pdf
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f632f0eda8---6765834988.pdf
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/996851079c6e38729486a71353b2dbe5/60814212216.pdf
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/d4f5adfcdc063e08f424cb57913abb58/tetebiwinenefeweveketuse.pdf
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfe39f46baa---72623839957.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+mini+militia+hack+android
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ce4.bin
fb8491275cba87913b894e82c6df73760aa1471bebb4afdc757d8e7214e42c80
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE4 10504 bytes
font_01_sfnt_off0001247f.bin
2f8bda06e7aa28ef9ebdc4cc09c9b3283eea8b26f5baa05f384417a10c4f17b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1247F 17788 bytes
font_02_sfnt_off0001535a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1535A 16792 bytes