Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a6228726a00059…

MALICIOUS

PDF

79.8 KB Created: 2021-09-02 05:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: beec0b29da602e1702cd4bc463b61a07 SHA-1: d05a2b02c1055f9ef54d0cba8fe492ed4f78292c SHA-256: 69a6228726a0005902f6442a73620d0389291f063acd639ac704cc89e8dcfc5f
154 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to various websites, many of which appear to be compromised or disposable hosting. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of link farming, likely to manipulate search engine rankings or host malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

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://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16119ff19b39aa---47688979310.pdf
    • http://chromatographvials.com/d/files/3363118452.pdf
    • https://giolog.biz/images/bulk_images/files/6639275657.pdf
    • http://linkingpeople.info/userfiles/file/45575984953.pdf
    • https://auto826.com/uploads/files/61344842383.pdf
    • https://ildiko-szepsegszalon.hu/userfiles/file/76731746742.pdf
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/ac5881867643e91593a56294408b2273/nimarelep.pdf
    • https://valerart.com/ckfinder/userfiles/files/wakejapose.pdf
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8a14a2810---laxudu.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ceaa916885---duxexuvuleremax.pdf
    • https://netkat.in/ckfinder/userfiles/files/30851288971.pdf
    • https://12shio3.com/contents/files/28637527725.pdf
    • https://n-zvuk.ru/upload/file/siposuzolomu.pdf
    • http://say-international.eu/userfiles/file/mapuvukomifopopoxa.pdf
    • http://careerdynamic.com/clients/3/3d/3d9dba0a3645e5854abf1db7654b9c86/File/9271730442.pdf
    • https://giolog.biz/images/bulk_images/files/bobagugerele.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/281d207aee163539cf106f1c31b5efa2/vedelusez.pdf
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/9fi2opb4vi916t67q7ikls4jai/lupafaxedifuvagomifivo.pdf
    • http://www.ondebiz.com/userfiles//file/nonidub.pdf
    • http://eltonltd.ru/sites/default/files/uploads/8418512899.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16118a17c76b45---64694367491.pdf
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9f4d2bc6f---85106350669.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=types+of+variety+in+art
    • https://tes-sys.com/uploads/ckfinder/files/20210819/16293765627811.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011056.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11056 16792 bytes
font_01_sfnt_off0001286d.bin
d9c13305f7b318e26e564ffad5faa2e2d62d56a63af7b7d34dfd9e799c0f12bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1286D 10448 bytes