Malicious PDF — malware analysis report

Static analysis result for SHA-256 752c5a814f672014…

MALICIOUS

PDF

86.6 KB Created: 2021-09-03 14:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ecadd5d5c5dbb6ccf309265aee6e1f1f SHA-1: 3d4d54bca0949a4f35e3c397937712e3bb742929 SHA-256: 752c5a814f672014874f6ed2ea088388cd5070ea1a1511be30577e0e7681ac38
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage, suggesting it's designed to redirect users to malicious content. The document body was unreadable, but the presence of numerous unknown URLs strongly supports a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/61b6595ab0abc3013a41e9b15dbad4ce/xesojisefozaretifulasumus.pdf In PDF document text
    • http://sugarfree-gelato.com/upload/file/dunajupijafaxim.pdfIn PDF document text
    • http://geodeslaboratori.eu/userfiles/files/50160349693.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/1935872531.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/a2cb1ce1428e225cda98051efa7431ca/kovesuwuwenodubinexodog.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/bbupsjf5j40narjkfknu6802c7/dixutujapojofubegibita.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/j6097oqtgf4fgtnps548655k0q/xisik.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/rmnbtji9e4uv1i7mo29jdob9o2/kumonarujomumirovub.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/37937648584.pdfIn PDF document text
    • https://fitness-sport.it/userfiles/file/dawejex.pdfIn PDF document text
    • http://misspacificus.com/clients/873634/File/mozupupowogi.pdfIn PDF document text
    • https://terrebleue.org/userfiles/file/rugasopasefiwebilazij.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/4rrp8av2og2i37vim1innt5209/mesinawusogawozafowiwonu.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/ab86fa5604749245307d3b3725124085/fudinasekasufivexeb.pdfIn PDF document text
    • https://le27.fr/docs/file/95747579951.pdfIn PDF document text
    • https://carrieres-pierre.com/userfiles/file/28859490442.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/ab0437a4620fe94a781917162253234f/putupanuzedowerep.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609916892ec7e---wivofene.pdfIn PDF document text
    • http://lavalnerina.it/userfiles/file/81800242269.pdfIn PDF document text
    • http://kppzp.pl/userfiles/file/19392743757.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/78eb68ad3676011c2c3bb162916b18ea/lugirijibasupejatama.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/u298qaq6c8grrki7hq76j4ruu4/18625333892.pdfIn PDF document text
    • http://deepakbatteries.com/uploads/file/96778969990.pdfIn PDF document text
    • http://cec-intl.ru/app/webroot/files/file/12016400486.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=icse+2020+routine+class+10+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000d39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39B 19052 bytes
SHA-256: fc2935a9fd2b9e07a3940af98c6baae738c95efa764fb41e0ca510e5728c33ed
font_01_sfnt_off000104a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A1 16180 bytes
SHA-256: c0217721a1102ad1f8a8ff5461faadb02f26a3634bfe128d67f68b25b112ee8f
font_02_sfnt_off00011a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A4B 10960 bytes
SHA-256: 35b3a7449cbbe006fa0ecb39f622e882b58828fb796145e6489984b9e7e9ca08
font_03_sfnt_off000133ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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