Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2029fac331e8be…

MALICIOUS

PDF

78.6 KB Created: 2021-06-30 19:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 22a1002d691b887ae97fa469612c1d18 SHA-1: d5e5a27b92820207573b31675a82f2819d258d91 SHA-256: ff2029fac331e8be132e1d365d27e669d6e59bb8356edbf03657da18309d6190
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains numerous links pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious or phishing content. No scripts were extracted, but the structure and URL patterns are consistent with phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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 http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c62faea1f1c---11597117762.pdf
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/42457909d2b1c014f756749e1eca8719/kiragulemuwonin.pdf
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b54697ec50c---pesebebawokekogo.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/3117f8583f4ba28441cd17d8723a2628/91090214664.pdf
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/9e38012daa47d4d8c7f867bf44b8effc/ginanifonimufuz.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/1b6g6gdr9i7g3bvs1qi16n74a0/43817273002.pdf
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/450oeaqp35lnhudmulfbaf5235/besuvikebiz.pdf
    • https://tranthachcaodanang.com/uploads/image/files/99422619980.pdf
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/d2e2adaec6f477dd1806c1ff799bd06c/67711965767.pdf
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/c1c14872e7a6e1f496a6d792d75d0677/7037239420.pdf
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/ccdb33a431fc6edb09b8c3189c02eaea/88857951150.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/zosazezetagi.pdf
    • https://medtek.vn/storage/file/lelujabuxadekevokudubovu.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/ee42dc4c1662152335c76c830470643d/tinugozalelodutadojow.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/b2b395efbcc7802285d032bd7e1dafca/78497864669.pdf
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/b707c3246a2e4a8ebc6bac06f521826a/37613977227.pdf
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/20106391348.pdf
    • https://bestofbucerias.com/upload/file/mezomej.pdf
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/e03c7ef9a3336f3b36803f4ceb556f5f/36236420206.pdf
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074cb18e1e94---25462459354.pdf
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160b4eb1ea502d---kitetenunotofotejam.pdf
    • http://ithaca1966.com/clients/8/85/85e9e0a76fddb83d7689cebc6ab07fae/File/67482213061.pdf
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075fcc9cd70b---99863494260.pdf
    • http://domeinbeverdonk.be/assets/files/file/pevixokadizudojuxexorofa.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=hebrew+fonts+for+tattoos
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbaf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBBAF 16792 bytes
font_01_sfnt_off0000d3c1.bin
6d514d88ee121d5ebf2fa7808107cfccd656bb743ce6b975e8803ee0c1e09da2
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C1 16480 bytes
font_02_sfnt_off0000fe95.bin
52d853fd1138f0456068fbf5596bccdcad6b3283affb57bcacb67a452bb00fd5
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE95 10284 bytes
font_03_sfnt_off000115ea.bin
ead2a4a5bee3792a9703e7fd79f548dca0117d288884df6fb5114b4a88bc1765
pdf-font-stream PDF embedded font (sfnt) at offset 0x115EA 16460 bytes