Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e69fd9a9172bbf1…

MALICIOUS

PDF

71.3 KB Created: 2021-09-01 13:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b93a86932f5af0ff3e786c77a8b0703e SHA-1: ebf83452596f956167f8392e8a8491ef5cb9933b SHA-256: 7e69fd9a9172bbf1bfb7947092372ac01c7f0ba3d5a375c8d4ede8e0344a5915
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs that point to compromised websites and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8786

Heuristics 5

  • 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
  • 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://philabc.ru/uplcv?utm_term=spongebob+movie+coloring+pages PDF link annotation
    • https://shopinhome.com/ci/userfiles/files/dabisufopujotodurobimuba.pdfIn PDF document text
    • http://uniradioweb.info/userfiles/files/72521686307.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4cb5a23c6---kebepokobilasawazeriwi.pdfIn PDF document text
    • https://didacostruzioni.it/userfiles/file/71620509811.pdfIn PDF document text
    • https://www.blondel-bois.fr/ckfinder/userfiles/files/zupedake.pdfIn PDF document text
    • https://dadesigning.com/daduserfiles/files/36134427979.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e55d196f8f---3834440516.pdfIn PDF document text
    • http://tvoirostov.ru/ckfinder/userfiles/files/43370312622.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1606d478212bd6---faranadebukojimexufub.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097eedaea22f---27027325990.pdfIn PDF document text
    • https://ezgoe.com/10005001208290177/ckfinder/userfiles/files/91825548452.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/37604890464.pdfIn PDF document text
    • http://dh-cell.com/ckfinder/userfiles/files/powaluteli.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210816212203.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/begupuwerunudezoreziz.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/solefasapuf.pdfIn PDF document text
    • https://driftwoodcc.com/userfiles/files/91430714936.pdfIn PDF document text
    • https://clumba-indoor.ru/files/files/24026320350.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ac9aa2a3e---86565711208.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090d0f8ceaf1---muzoxopoxuzolukujedexot.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a41a033651---tidogokavolarusedar.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/7535723898.pdfIn PDF document text
    • https://jxloanchien.com/style/postimage/file/35423921960.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/a1260ecc15383867bd1f5f942d4c110f/guwotiduzerebumagori.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/0qkqc5gvi4lmgab7nf67b7sod5/15561013364.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5B 10900 bytes
SHA-256: 08882ae984c69c07d9af327ab17d91814a96bcc3ce4a303647f0a1141be83cd0

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