Malicious PDF — malware analysis report

Static analysis result for SHA-256 0041df94290c2144…

MALICIOUS

PDF

650.9 KB Created: 2021-06-27 12:35:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 222ee4950eb92591ecb0b473aed7630e SHA-1: 5fb288703bf3b4da83b0e2b94c5724facb3e8afb SHA-256: 0041df94290c21446f03c2dafc0adcadc357a77a6432da74a1e46fdeb67e05e1
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as a malicious PDF by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous links pointing to compromised WordPress upload directories, suggesting an attempt to host malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a phishing lure designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160925590d424c---savivonunotene.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef830d4357---85756263039.pdf
    • http://bahtiyardishekimi.com/fckfiles/file/junigegobezi.pdf
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/d81877e8be6fbd6493a9736a59d2271e/jojesaxel.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a8e2af0b0---tomenigexorozad.pdf
    • https://picinterior.com/ckfinder/userfiles/files/nerutiwenadiwugaxijokupu.pdf
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bba7061efea---63853398306.pdf
    • http://ainut.fi/userfiles/file/sizexizitetiwi.pdf
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc0859b340---71909798979.pdf
    • http://eko-inwest.eu/upload/file/porujegubosogile.pdf
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/4758cc59cca1b3eb1e83508f7a155aac/40110728695.pdf
    • http://cerezolorente.com/files/cerezolorente/_repo/file/45247335696.pdf
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/a8a49524310e39ea479b98748fd34158/15469277348.pdf
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/343ad4713e58c741120e86652579c654/94319183190.pdf
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a761c38f196---28568560961.pdf
    • http://kath-kiga-bw.de/bilder/berichte/file/66624634047.pdf
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/332f1b674c043876d113bac2a96a9762/gibosovezawu.pdf
    • http://teplospectr.ru/images/files/batobokekerebe.pdf
    • http://tribo.kz/userfiles/File/34841374785.pdf
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16087cb605770e---ranoriwudetagujol.pdf
    • http://icwest78.com/clients/67591/File/45341914219.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=waiting+for+barbarians+poem
    • 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_off0009b723.bin
758e5b47e5e76298a7eeb2448f2c12782998644a8800a701d221cd13f1b57394		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B723 19820 bytes
font_01_sfnt_off0009ea71.bin
71395f7fcc256483f3e25b50ea350f36389adb6b636b1f11cd32bf5150b4bd8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA71 10788 bytes
font_02_sfnt_off000a031e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA031E 16792 bytes

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