Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e337359984101f…

MALICIOUS

PDF

82.8 KB Created: 2021-09-12 19:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e5a7a5123c222cbe8aaf7e7769f1f635 SHA-1: 28622a68f8d278173e7aef301c733677c61215ee SHA-256: c7e337359984101f3e762d0632527ad7dd12c6b2d17c292d1b437874e475e94b
126 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV, indicating it is likely a phishing or scam document. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically points to the document being a link farm on disposable hosting, with numerous distinct domains used to host PDF files. The embedded URLs, such as http://spadhotel.com/..., reinforce this finding by pointing to potentially malicious or scam-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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 http://spadhotel.com/basefile/spadhotelcom/files/47154255893.pdf
    • http://winhazel.com/indigo/ckfinder/userfiles/files/waviruxuw.pdf
    • http://architettosbaffo.com/userfiles/files/19566224901.pdf
    • http://hzjksj.com/images/upload/File/kejudupodunagekewuwujuto.pdf
    • https://bloomeng.com/uploads/xaxebonegusite.pdf
    • http://hpworld.hu/data/pic/Image/file/85197868203.pdf
    • http://easyhypermarket.com/userfiles/file/90011290332.pdf
    • http://giteduguedesboires.com/userfiles/file/16780484142.pdf
    • http://huile-de-nigelle.info/userfiles/file/76289254458.pdf
    • http://ever0036.com/assets/uploads/ckedit/files/20210909203836.pdf
    • http://happinessgown.com/upload/users/files/fomologewiwa.pdf
    • http://llux.vn/uploads/files/tozezasizixotudepuf.pdf
    • https://allegypttours.net/userfiles/files/voxituvuxenelete.pdf
    • http://lnimeina.it/userfiles/files/birubodikarekosaliw.pdf
    • https://mps-india.com/userfiles/files/9760785677.pdf
    • http://plechotice.sk/tmp/file/siwuzuvenazaxek.pdf
    • http://studiocariola.com/userfiles/files/72105913870.pdf
    • http://www.museopizarra.com/ckfinder/userfiles/files/xewulodefu.pdf
    • https://locoffice.ru/userfiles/file/dufagenenozikaxisezaduta.pdf
    • https://ksi-system.pl/editorfiles/file/nasanipenisa.pdf
    • https://eksiliotomotiv.com/upload/ckfinder/files/texutifosip.pdf
    • http://photopuzzle.net/userData/board/file/putolowexigov.pdf
    • http://linkipt.com/_UploadEditor/files/93148113515.pdf
    • http://raegcafe.com/uploads/files/57584538116.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=maps+of+meaning+summary+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de33.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE33 16792 bytes
font_01_sfnt_off0000f64a.bin
aa22ec2f1754ce8ad5787a41fea6a10f7d8192bc792124d07b949413f895ade5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF64A 10904 bytes
font_02_sfnt_off00010f50.bin
a82686170756fb90bd8a0f57f74b02bb61a658c79e36189263a13fa3df5b5aad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F50 17928 bytes

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