Malicious PDF — malware analysis report

Static analysis result for SHA-256 35edcedcfbfd3164…

MALICIOUS

PDF

86.5 KB Created: 2021-06-29 12:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: daee6213974ea1055f961cf8e642cb40 SHA-1: 664e0a88383504d6e8eb15858dcfd426e36d82a4 SHA-256: 35edcedcfbfd3164bf71816b8a30bcaa08ba6e8aff79a72f45c0c44126b7a864
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to compromised WordPress installations. These links likely serve as lures for phishing attacks or to distribute further malware. The document body is unreadable, but the heuristic findings strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • 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://irlanc.ru/uplcv?utm_term=can+dogs+eat+clementines+oranges
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/4be0cd4a148cc3fdb4133db7ab93316c/59737672265.pdf
    • http://asiadomainstore.com/userfiles/file/lazupojize.pdf
    • https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/6f7619ead90a3c26ecb33f877bb62b3e/gekiwam.pdf
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/qusddai1vlvk483dos4ahfd0od/bulefubufovete.pdf
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d33c301047---pasogex.pdf
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c46d5aab507---damike.pdf
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc29c433b3---xosozexakolajanokano.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607b5704af846---tiburelidufamenusid.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af609046863.pdf
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab9d15acaf---dilasakorakebomip.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/aqdako5p1iii1s2dh5erikjb91/kujofi.pdf
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/dc5b5c5dc318bb4a065555c1b1424ac1/fogevakulugusozag.pdf
    • http://x04ydivan.ru/userfiles/file/zimodugewerunujen.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/s09smn0vgr03ek4f91jj7uut00/kidabivamibavatixusi.pdf
    • https://artbynela.com/uploads/file/39632477798.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a87a3aaa8f2---68918558451.pdf
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b851ddba713---satisevogaretukefovupo.pdf
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/hpfi5n6ne3t74ms6d0sfbvbu50/45466207987.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b1cad394a---divepinelal.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/46a1a57fa23cb66223903708f7962c81/tumilajazeniterex.pdf
    • https://lawyerupsmart.com/tempimg/file/bopafitom.pdf
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985e4b15874---jaxixudob.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_off0000f0e2.bin
156ba0b74b3f24876b2e19e083620eeb31e8d41d2be2811dfb13f9b99e0d3c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E2 10744 bytes
font_01_sfnt_off0001095d.bin
66686071487fcb43bbefb908d29cba80155a4f43f22bed0ceb66a3aaa774d4f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1095D 16844 bytes
font_02_sfnt_off000134d0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134D0 16792 bytes

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