Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc93d6d0694a8a1…

MALICIOUS

PDF

144.0 KB Created: 2021-08-03 03:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: bf6ff57d6de125b78848915a288e09f5 SHA-1: 9fcd4ba13d7c0b84d2972ce30ed71bf6454b9541 SHA-256: ffc93d6d0694a8a13eb24478266119413d35e9048469392d652abcbfb8d52ac5
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that point to compromised websites and disposable hosting, indicative of a link farm. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution intent. The file's structure and numerous external links are designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2622

Heuristics 5

  • 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
  • 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://krisoc.ru/uplcv?utm_term=how+to+connect+wansview+camera+to+alexa PDF link annotation
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfb7b237cba---vivoxudenevivavopizadap.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aaeb927b66a---60585315628.pdfIn PDF document text
    • http://karmand24.ir/basefile/ehotel724ir/files/pajidirawirogekamugin.pdfIn PDF document text
    • http://ngor2-3.com/file_media/file_image/file/63151510608.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/72136114842.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160903c8b0cb42---91012888624.pdfIn PDF document text
    • https://aodaixuan.vn/app/webroot/upload/image/files/rarepumezifani.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160bdaf8eca9b0---fiboruwonozifejamid.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160e3538c34707---papedipapavanatif.pdfIn PDF document text
    • https://webmenuplus.com/images/file/tazinifilejimosobuti.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609079433a962---44330205226.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/804397d1caabf58e6416b7b938a77be9/54714998439.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/86c135855b12f4b4381d471d583ec684/mudajemawifekaxatuki.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5ad5ab5fb---jagose.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/zemenorovuzajirimumikora.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/silezerowewos.pdfIn PDF document text
    • http://novussiteyonetimi.com/uploads/file/36231564117.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/2cd995f8071c9d680ef06e3033b11d38/80438176676.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/sativipibajizamad.pdfIn PDF document text
    • http://gloexdr.com/wp-content/plugins/super-forms/uploads/php/files/01d97e86722fea80a97e1efa60fc6892/45755340060.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/d50e5434e4c87e8b7d9bfb3ce354d686/fizawuxesufajukowuj.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160712ccecbd6e---nunisuxaba.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878c4d5e795---latibejupojegobojax.pdfIn PDF document text
    • http://acudrved.com/ckfinder/userfiles/files/xixexoneno.pdfIn 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_off0001d25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D25C 19532 bytes
SHA-256: a67697522b088c2dd869eedc705f0f6529cd0998e8a2804ae12153c7ba4d38b3
font_01_sfnt_off0002064a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2064A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00021e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21E57 1732 bytes
SHA-256: 5b3c947262022625ef2d4cfb2d0fa10a94f23c97611fd4c7364bfcc62a76ce6a
font_03_sfnt_off0002268c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2268C 10636 bytes
SHA-256: 9735e98d688443815fb633a7e4a49fa0fb77416388a3204cdd512a1dc936e9c4

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