Malicious PDF — malware analysis report

Static analysis result for SHA-256 661fd2f122349758…

MALICIOUS

PDF

121.3 KB Created: 2021-06-25 20:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 602ac7ed7c89dfc1fffa85b67fbb9aed SHA-1: 9e4f391bc66d060e3a8b64c74572449cd3c87a62 SHA-256: 661fd2f122349758afc11f2640a31738b994ddb01c9a0240e12fba46fa40968f
196 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The presence of advance-fee scam lures, coupled with numerous external links pointing to potentially compromised or disposable hosting, strongly suggests a phishing or fraud operation. The file likely serves to direct users to malicious websites or to trick them into providing sensitive information under the guise of a lottery win or parcel delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

Heuristics 7

  • 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.
  • 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.
  • 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://crysiq.ru/uplcv?utm_term=9th+class+english+2nd+lesson+question+answer
    • http://shosholoza.de/file/63430237101.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2ddd2a666---92804682246.pdf
    • http://caycanhtuyhien.com/uploads/image/files/10858074816.pdf
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/ed5026e0c3b35ca5f2d84d5987057768/julogevonope.pdf
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210518090148.pdf
    • http://ptaki.info/imgekoprojekty/files/gafugumunopesaza.pdf
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160941d8f48aa3---wumikexasaro.pdf
    • http://cybernet.asia/UserFiles/File/6180594496.pdf
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4a1e5105d---nunadiwozitugozo.pdf
    • http://nhandieurangmuoi.com/ckfinder/userfiles/files/86305107203.pdf
    • https://clickkedai.com/userfiles/file/xupibijotimawurazej.pdf
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160cf30182bf0e---36843961817.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609829a130ce9---kirorowupan.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089fa84b4298---33224148588.pdf
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/f275ad971cae95bc0703cbebefd68862/wurupatobunolajusobusow.pdf
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/afcsbtgq42p2q6i4johvlj1aiu/dulovawegegarujepekeme.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfb35482a1---9662166984.pdf
    • http://plkorea77.com/ckupload/files/tinuzituzozidazaborupitex.pdf
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/c5699d750724e998118f2c78c3dd5614/98086115877.pdf
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/0kdri2sb2u3ph94m6q5geeotu1/11491908172.pdf
    • http://helpibr.org/clients/f/fe/feaff840d005acecac0f151e8679c8db/File/24986193978.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160787e28c65fa---rulewur.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608194f532f56---naxajezekebebibabonoguri.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015efa.bin
95f3dc03763cea0c60e35e4fdca68203653d0e4d9e161c1f5ecb21e67b4d4099		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15EFA 11172 bytes
font_01_sfnt_off000178af.bin
c8a207725640e770427ab25ff6722810a0a4b6a3145d30c8f01ef878b8b9d0c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x178AF 17900 bytes
font_02_sfnt_off0001a7b8.bin
00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7B8 16140 bytes
font_03_sfnt_off0001bd34.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BD34 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.