Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e2a55953d195bf…

MALICIOUS

PDF

75.2 KB Created: 2021-08-31 05:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d7d327333bff9f20f17522c1c2a76847 SHA-1: 31d3850a87b6d3d14c23305b29fb5b96dba83caf SHA-256: 17e2a55953d195bf1c9f1a2c0281401904e6d5c59b5172c49e48cf36a0e62aed
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://kurskodkb.ru/page_edit/_samples/userfiles/files/30610369636.pdf
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160841e737911f---lebozenatiluju.pdf
    • http://www.jindatunnel.com/up_files/file/88001392196.pdf
    • https://okinawa4d.com/contents//files/waniwineriro.pdf
    • http://villa-margherita.biz/userfiles/files/40947472781.pdf
    • https://taipeitccia.org/CKEdit/upload/files/pokejoduwopetalogupugexu.pdf
    • http://321eastern-thailand.com/userfiles/files/31692111529.pdf
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8812aaadd3---zoxeboxexuzinisuvulefin.pdf
    • http://samtekelektrik.com/files/77279406096.pdf
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/9q3hraqiscvpjsl27lotk1sq93/16085358211.pdf
    • http://bancasemecanino.com/userfiles/files/28000005001.pdf
    • http://hnfhdc.com/UpLoadFile/2021081500425250406.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160964b524f6e2---debijewigabinux.pdf
    • http://logisticsnetworks.net/ckfinder/userfiles/files/86107092501.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/jplf90hlph3mcdv017t7jpgf39/venimivuzinumuzaj.pdf
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd50b3a6e3---xofamifiterodinivovasaj.pdf
    • http://terezmisszio.eu/files/file/54516888756.pdf
    • http://gabortech.com/admin/file/44865371414.pdf
    • https://hzautomatisering.nl/userfiles/file/nowofulamiwubutexedida.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d543170e5---37731010402.pdf
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16946d69ac---xabizivuli.pdf
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/ca165730m2pfmfa5f65mqdslfq/66164927539.pdf
    • http://marketherballize.com/ckfinder/userfiles/files/zanesusomebu.pdf
    • https://mgc.to/sites/web/upload/files/47902400209.pdf
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/3j1lkrec8o5pvf0mpjh7fmr89a/40084172185.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=word+start+with+n+and+end+with+g
    • 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_off0000c490.bin
6c378f75a9d002b73e3907319e8b0d9d6e5478fb1caee329d71828dc0d0b8e4c
pdf-font-stream PDF embedded font (sfnt) at offset 0xC490 10560 bytes
font_01_sfnt_off0000dc6d.bin
d1754900887dd9db50cd41ab53609742df88c3a001898f7b4b25cfb8702645b9
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6D 16216 bytes
font_02_sfnt_off00010618.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10618 16792 bytes