Malicious PDF — malware analysis report

Static analysis result for SHA-256 69176dc88e862b75…

MALICIOUS

PDF

94.2 KB Created: 2021-06-26 15:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c1c2a00a99c24c3d65faddae5186b9ae SHA-1: 1666ca7bff6469b9711fe0dfca5fff58cdb83839 SHA-256: 69176dc88e862b759d4141e530d9df98de4bd38bc0b4d35a8579d3ae896509db
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm to distribute malicious content or phish users. The presence of external URIs and link farms strongly suggests an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://nomylo.ru/uplcv?utm_term=meaning+of+the+word+lewd PDF link annotation
    • https://annjulieskarpmo.com/userfiles/file/sezaga.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/d26067803729ffb3ece4d5775a20a948/wigoradadesaruraneja.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/8j6btetdhkknfen3t3h3bttv74/90439855339.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/43d5d4c12f6c26eb0889b83d92521829/mosikona.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c65b7c6b4---zufugalutasovagukoxijoxu.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/42912645975.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16071d11820a12---jopovavu.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/65841897253.pdfIn PDF document text
    • http://3bbb.fr/ckeditor/upload/files/70302363378.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/aaa9aa2c2ca0476ab49e75daab89c85f/27822649151.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/d09e182ccb022e6ef829aad51e2a9329/62257644109.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/d3bea2514e1733dd533f5eda641e33de/84010932986.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/3qkjojndr63rfa17cvobddv9j2/84266090600.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b1a6d0cc805---jogebigigixew.pdfIn PDF document text
    • https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/gakokojeb.pdfIn PDF document text
    • http://colegiosantarosa.com/uploads/imagem/file/tesaminevebotaturisi.pdfIn PDF document text
    • http://konemara.hu/userfiles/file/28557683816.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739ec64fbee---69930755317.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/78214627542.pdfIn PDF document text
    • https://ismart99.net/upload/files/kadoparoj.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c488f01244e---49775417105.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/6a51935d3be27d7d4af5fb50837c0106/tonuxirujugomewulufip.pdfIn PDF document text
    • https://tungqibiotech.com/upfiles/editor/files/wodogiluzefixuvukunowajuj.pdfIn PDF document text
    • http://abovomedia.hu/_user/file/bizogekufawadil.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/bexemazu.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_off00010df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF0 10544 bytes
SHA-256: 9c59f5083cf8c999ab363b28ea33e0b0d3e104d06e4616a00b16c034b9a03b84
font_01_sfnt_off000125ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DCC 17448 bytes
SHA-256: d0126af4c45056349384749fd3cc40c35d394d823c0e00725e24b0bf8d4efcd2

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