Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef96b0eef4812ff…

MALICIOUS

PDF

614.3 KB Created: 2021-07-03 18:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6b71b9f6925a46d7809c1fd0013689a7 SHA-1: 4fcf38c8104645b8c33775285725f8ec26dd91ac SHA-256: 0ef96b0eef4812ff1e28b0bd6f6c9c32982d34bcc0c53015ad0d340a2bc2b441
166 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which appear to be compromised WordPress uploads, suggesting a distribution network for malicious content. The document's purpose is to trick users into downloading further malicious files by impersonating legitimate communications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7494

Heuristics 6

  • 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.
  • 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://archism.ru/uplcv?utm_term=daily+paragraph+editing+terminal+velocity+answers
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/lbo3rrord7d68k1tb1t7n1c9u1/71076227224.pdf
    • http://ipllaser.in/uploads/21501250290.pdf
    • http://cephedanismani.com/images/pages/file/79408594194.pdf
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d52f2ca467---26921122893.pdf
    • http://pokorny-podlahy.cz/UserFiles/File/25342945194.pdf
    • http://bright-mineral.com/uploadfile/file/2021062413552573.pdf
    • https://blueridgelightingandcontrols.com/wp-content/plugins/super-forms/uploads/php/files/34928c7281a2e1b6842621aad69c6607/xirajulobom.pdf
    • http://www.darvidproperty.com/news/file/71936036540.pdf
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/bonuneniluwasa.pdf
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/b4srb57jmiml9rnqkjpjbaln0u/piwerexibalosesaliku.pdf
    • http://lacyfamilyunity.com/clients/2/20/203fd950dafdada58ea32e7b96f0d147/File/susugojo.pdf
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/97a4b04f3ed07f5a552b06a1017ba336/guzisonowo.pdf
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c874811b9f4---budobibosidimize.pdf
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/ejbvg02sm5t2qactge01chvrmh/84626501470.pdf
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/12ac99da85f00ab58e1fbc4c31a2017f/16276581111.pdf
    • http://davidhammerstein.org/userfiles/file/42924670804.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d86aca9a8d9---jakujegiwomuninatoviz.pdf
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/396a79b4dbfb1121bf3d932e184c6a5a/35119719174.pdf
    • http://yongqingtech.com/d/files/manajezejejasog.pdf
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/n0h106dtfsoh8jh05k7a064227/87615897285.pdf
    • https://biblioteka-koneck.pl/ckfinder/userfiles/files/50283790567.pdf
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160755b096fa75---47717661664.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/co266gllg25af58gh75cdn2os0/sidisapolarixifigulo.pdf
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/sivbcvlbs856du2dugm29tg0l0/87942787471.pdf
    • http://agendatourvietnam.com/hinhanh/file/xiwexedelebitukotozurob.pdf
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/ec6ka7p2mvoatvk09vbf5gqtrc/sazedunazemitekipazabetom.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/fpquc8uebj20l8huks4ecknl92/gufoviwabutagusapifamo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00091e69.bin
d692d35e23705b6c904a560bae391196de8c638e497ad09d339da06ee46f6f55
pdf-font-stream PDF embedded font (sfnt) at offset 0x91E69 11228 bytes
font_01_sfnt_off00093866.bin
0d02353be4a361e6c939cccf8e8263b45157191b1b79028dfc080c893359f4fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x93866 20484 bytes
font_02_sfnt_off00096fcb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x96FCB 16792 bytes