Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebb40729b3cbb7e…

MALICIOUS

PDF

76.9 KB Created: 2021-09-06 03:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: efe199cefb83324054eb72b7c55bc5d9 SHA-1: 605bbf1b63a76b7bbe3ff0fda3c6d325f59aa79d SHA-256: aebb40729b3cbb7ee3d7a4d4ca7be9dabc238fd30f2707c8a65aacec16def1ac
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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
  • 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://inwebjor.ru/uplcv?utm_term=formulation+of+natural+shampoos+pdf PDF link annotation
    • http://agendatourvietnam.com/hinhanh/file/13152803339.pdfIn PDF document text
    • https://pinyardim.com/calisma2/files/uploads/31738676111.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/1f639d91d888c746168776e9f6b265f6/jasajufijosogetaburizul.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/fbb3b42d8617f3994d978ce612e8ee75/84307580318.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cb3d5a690---dulanifanosinatokejit.pdfIn PDF document text
    • http://ineke-ott.nl/keramiek-beelden-imagesfile/nunufemovef.pdfIn PDF document text
    • http://thehonourride.com/clients/c/c2/c2a221447f3e921143a55eca482c8289/File/bumotedefufufenovewivumo.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/rudiwesatupajefe.pdfIn PDF document text
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/vudepibe.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1e89dd9b2c---34526637317.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a83fbfe50d2---vupavale.pdfIn PDF document text
    • https://livredart.com/ckfinder/userfiles/files/22113891635.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f888116f295---bipizaxotelapunobi.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fa616955ee761d782718eef2a8d22477/wabesosapelobomo.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160725a119df13---79707313118.pdfIn PDF document text
    • http://ovecollection.com/royal/admin/images/products/file/vututugadafazi.pdfIn PDF document text
    • http://cybernet.asia/UserFiles/File/jakiwiwidazenev.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161264d66229c0---71519731943.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16126cd46007d6---bigajejalavavapurevurig.pdfIn PDF document text
    • http://elite-weekend.com/clients/9/94/945a7f92a07ecc721aac768ad340748a/File/zasojugozojofepimizo.pdfIn PDF document text
    • http://kubablimel.pl/Image/files/10644822947.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e1e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E0 10708 bytes
SHA-256: c4c769e474708397abe8cd1f131176a8d7394e5d7bca5e6b79f5ea5e973f7bb0
font_02_sfnt_off0000fa2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA2E 17388 bytes
SHA-256: 70a8104b33f3ccc909d76a59f121593beb37f0eda482c04bf16ae1065eef3dce

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