Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc29274195ecae2c…

MALICIOUS

PDF

69.9 KB Created: 2021-05-06 05:35:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: d85fe30fd4a9261dbad9abe360d26f5e SHA-1: c8b189b42eec1acb0c2d6266e1ae587143ed6172 SHA-256: bc29274195ecae2c78fa60cc37a52ecf6d9ece5dfd228d1eee5d87b5ef974bda
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and disposable hosting, disguised as a download for 'Bloons TD 5 mod apk'. The embedded URLs suggest a phishing or malware distribution campaign, likely using the document as a lure to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pistant.ru/uplcv?utm_term=bloons+td+5+mod+apk+3.+16 PDF link annotation
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16088a8965e159---8301239446.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/zoruwidumeravevemar.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/3bad9352369c3a37dbe94a14907b0100/32047769819.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608340b13a0f9---65338744127.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/utf804dn5m2kmbp5b1hd5d018a/koboluzajurafixofajotil.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/43d2d2e1539ff3284920b5beb15742c2/kamolumikav.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/89c941f49c56f45f8272346f4e053c38/45050106743.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f54ddc28cd---kizijivelovasil.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/iu541npks07klsj2joe2fquj6c/74855874967.pdfIn PDF document text
    • https://zanhotel.ro/beficientconsultingFiles/file/tojitewegegawe.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/ctrahhupc4re7ko8msl13aaegt/23120451979.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/0c4bb45405d8fd8d231ef8b29a43dd8a/22823483288.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/ghnsk2jh93ee6v0cj6f8rqma56/43854668001.pdfIn PDF document text
    • https://activepymes.com/pub/file/pelovifomupegamafoxa.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/5beaa7dc0b28c5d4d9e149811a863910/3486128402.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FF 5648 bytes
SHA-256: 6af5a7d1626267cb7f97b2434dd7ca662ccd51fd80340f4732d881c751dbb987
font_01_sfnt_off0000e735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE735 10484 bytes
SHA-256: 26a9669d8054be21598660fe8d2b8542d3015ef3ea010b089f207bf49345a8db