Malicious PDF — malware analysis report

Static analysis result for SHA-256 0edc61ca530cf8cd…

MALICIOUS

PDF

104.0 KB Created: 2021-07-28 14:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 913e86747df59466fe04eb3707e26d1b SHA-1: a77e4d55c70b91973b1a436fa7d81d08f7546b0e SHA-256: 0edc61ca530cf8cd61984ecfb5c95a9d7603a185b336a13ca8c87b94a309cb63
156 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous URLs pointing to compromised CMS upload directories, indicating an attempt to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent. The primary attack pattern involves luring users to these compromised sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5536

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d024fbf04e7---64447219766.pdf In PDF document text
    • http://cka-shiba.com/ckfinder/userfiles/files/76176089006.pdfIn PDF document text
    • https://childconcern.in/trila/userfiles/file/47217720549.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/da11f1a8a1180ee671e9d8040f3c2a9e/wosekokuxuxomiw.pdfIn PDF document text
    • https://norservis.com/files/files/lofijodiminedubow.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075c22c088b0---76501064192.pdfIn PDF document text
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa93e46a98---gerokogaporakodogakaxevo.pdfIn PDF document text
    • http://ekachaiguitarist.com/ckfinder/userfiles/files/82623575151.pdfIn PDF document text
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/s4t96g73oubmekr7sf1701hn13/megixafeginineledewotute.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/p7h967uvvss6hu3h07bdekmvkc/xuleminigatejuzej.pdfIn PDF document text
    • https://capitalsyndic.com/userfiles/file/xovubud.pdfIn PDF document text
    • http://johnmichaelharrisonlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zugodorobakiwazaroraruxis.pdfIn PDF document text
    • http://thephinhmienbac.com/upload/files/mokawulijopines.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c96ea179dcb---tivujeriguge.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/m3itbn630j397grft17dnc6jh0/suruvamugebakamaj.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/5debdd8e2cd71f8b72bc39125f309905/52605719573.pdfIn PDF document text
    • http://immodraft.nrw/images/architekten_agentur_images_/file/56919441823.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16098409311f3b---xupivevevavesemabenep.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/boperaropavijoxedexe.pdfIn PDF document text
    • http://saeronbio.com/userData/board/file/56969158549.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/lojipowep.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c63698c8c3d---46041090123.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b489f84e80---80743585846.pdfIn PDF document text
    • http://innobiztour.com/FileData/ckfinder/files/20210725_62EB788AA7F77C1A.pdfIn PDF document text
    • http://ayurvedicclinic.org/userfiles/file/92075767372.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=frozen+ganzer+film+deutschPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001265d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265D 19380 bytes
SHA-256: 469877da03786bbc4ce94c3201d5f88fe2d37af266158437f818de21db8fbf91
font_01_sfnt_off0001574c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1574C 16192 bytes
SHA-256: 97e3f73a58ccdd4784c9ae1678d9f90717e6b6d0c87c36bf93adb8865ef65ebd
font_02_sfnt_off00016cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CD8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off000184ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184EF 11060 bytes
SHA-256: 1e6550a7fc8252109e4cb6a0e533e60d47f734c297145365cafc5d616ced5b22

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