Malicious PDF — malware analysis report

Static analysis result for SHA-256 5970fe2b5692a9ce…

MALICIOUS

PDF

84.4 KB Created: 2021-08-09 23:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 3a44ec1a0edac3507e688062d535b9d9 SHA-1: 2ed556b4cfb916308c30c2a507c21496c9383a1c SHA-256: 5970fe2b5692a9ced8c528a720ce1d5c70bae472264bf0b55abf3b1f04de85aa
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/161118650908ff---34409607252.pdf In PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/c22429c38a0c90177fd4e03714f4cca5/96804775550.pdfIn PDF document text
    • http://stevis.cz/files/file/12994415627.pdfIn PDF document text
    • http://centronegozi.com/public/degutodufedanodapis.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/963f0096b70475b11414529eaf0bb7c9/radoxalobaxefoja.pdfIn PDF document text
    • https://tomorrowhubs.com/upload/users/files/wapunevazibomofav.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77fa01237f---7198051575.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/lirowonejilejidemedomasut.pdfIn PDF document text
    • http://sinproval.it/userfiles/files/pojawetopejifujojuvoje.pdfIn PDF document text
    • https://sca-eagleegg5k.com/ckfinder/triplebuserfiles/file/radatinorememuweb.pdfIn PDF document text
    • https://botroul.be/uploads/tojogalofevajo.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16092c761f24b6---70272130807.pdfIn PDF document text
    • http://lesen-und-schenken.de/userfiles/files/gamapisigajigujepi.pdfIn PDF document text
    • http://autoscuolecasetta.it/userfiles/files/telidogilo.pdfIn PDF document text
    • http://mdsalon.ru/img/lib/file/peniko.pdfIn PDF document text
    • https://emilline.dk/ckfinder/userfiles/files/womevijofedi.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c45c157a371---24430186700.pdfIn PDF document text
    • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/ec4ce2d07307c186466fdbb51f83a67a/ribaremonixu.pdfIn PDF document text
    • https://eventaipei.com/upload/files/50271716166.pdfIn PDF document text
    • https://drproperty.in/userfiles/file/zajoja.pdfIn PDF document text
    • http://apogeeconsultancy.com/upload/files/43062273082.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160865c8ee3f73---lezojavi.pdfIn PDF document text
    • https://limmaginebistrot.com/file/51343259991.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/fpmu4e04abrt1mg3enl3tjvknn/30457392389.pdfIn PDF document text
    • https://p99.tw/pro_pic/files/notedubapilo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=aa+kahin+dur+chale+jayen+hum+mp3+song+downloadPDF 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_off0000cd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD5F 11536 bytes
SHA-256: 336e5d11425607439d8be081a2f7f3a3c6be76d4a5927bfbc2d137ec29aba305
font_01_sfnt_off0000e853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE853 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd
font_02_sfnt_off0000fd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD94 17200 bytes
SHA-256: 835602d00556414eb86f2eadedfe4aa4edad51b9495ab9dcd4ed4fa87c99f87b
font_03_sfnt_off00012ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AB9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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