Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e870c29d969ed60…

MALICIOUS

PDF

91.1 KB Created: 2021-07-18 16:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 14232e67c078c2d14ca529f1e48a66f5 SHA-1: cb8b9961758b6cad933403d86877a9a8b0b2d7d6 SHA-256: 1e870c29d969ed60ff3c861fdec695fb6dc3a9c8e43692784daffd8c3ce6b119
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs that point to potentially compromised websites or disposable domains. These links are likely intended to lure users into phishing scams or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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
  • 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://toyteepee.com/uploadfiles/file/210713183558154897hal4wa.pdf
    • https://alshaabcoop.com/userfiles/file/futoboxeji.pdf
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/fcuut5pjqd7tl4vrt7fleg47q7/guwipebodijutawogig.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/164ade38a9c85e0fc89c58cb14e62b5f/fuborivenux.pdf
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/351994acb8d4f8cbc716c54059ccbf79/54515163935.pdf
    • https://anfauglir.com/images/file/9851154266.pdf
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ae251f4ae06---90185458862.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e755dd5b13---86313441447.pdf
    • http://klpa.net/userData/board/file/regisaluruximoxevuxi.pdf
    • https://hyundainhapkhau.vn/upload/files/80377678396.pdf
    • http://fhs76reunion.com/clients/0/00/009202203981f132fd14d012a57c0fe5/File/sotaku.pdf
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb38e15597---40199873192.pdf
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/9a82ba39a498001fa8addb79f65e97e5/lavaseruriwimanu.pdf
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/taxamifif.pdf
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/b046488e579edaa64ed0061a7c90aa44/36339680576.pdf
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/2a643d721a84ba02944bd1429e234e09/towogevo.pdf
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f08de3de5---zonotemekujumujosin.pdf
    • http://ufnk.fr/app/webroot/files/file/19399092353.pdf
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609421aab258e---rixalojakimotok.pdf
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/8bp90n13v2ea6904uh2ivu6daq/pikitivukolusufuwi.pdf
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16098a6de748a4---tibake.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1609f65fc12bac---lubosomigigitibetupo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=most+beautiful+hollywood+actress+of+all+time
    • 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_off0000fe00.bin
69bd1692d83476f8bbae84d7da2d1cd8143457402c356f69695be054d4d91d77
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE00 17488 bytes
font_01_sfnt_off00012b5f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B5F 16792 bytes
font_02_sfnt_off00014376.bin
ebaf4d69421a36933f483352ecf2e7d23ac771ad455137f3c60c34ef0c7575f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x14376 11072 bytes