Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e96a457fec18a7…

MALICIOUS

PDF

94.3 KB Created: 2021-07-17 19:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 433883bfcee70511c0e2b88954e47a85 SHA-1: 1f0d70e5b550fa38bb91e351fd69b7c39b06807b SHA-256: 17e96a457fec18a787cbfe151924c4a1ed930b394458b3cb595bda0da1d343e1
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and utilize a link farm technique. The ClamAV heuristic specifically identifies it as 'Pdf.Phishing.Trojan', indicating a malicious intent. The presence of these links suggests the document is designed to lure users into downloading further malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4419

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://energy-labels.com/userfiles/file/16397159434.pdf In PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/815444432231794be475bf9f3dc48013/99256558475.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608170664076e---88595505084.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608502e208b32---dumegadamuru.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d91d9221c---pibeseke.pdfIn PDF document text
    • http://caratow.eu/userfiles/file/44554091759.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/wenejipowigeb.pdfIn PDF document text
    • https://www.apollopowersystems.com/wp-content/plugins/super-forms/uploads/php/files/ed2da756260f7b561819d5d010b21d19/22283091511.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/26dra9s4i7mqamn1p99gdgdvt3/nelujak.pdfIn PDF document text
    • http://usmleworkout.com/files/file/9104159691.pdfIn PDF document text
    • http://iziusb.com/userfiles//file/51571242698.pdfIn PDF document text
    • http://thomasbelldescendants.com/clients/40432/File/97992033997.pdfIn PDF document text
    • https://isleo.com/i_photos/file/gosatitetidifatowaku.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/e7d861fc9a1b1aeefb74248da2a8828a/75865589834.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/c8092ecd78e72e9e4a82fd6243d412e5/71006398198.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/36da542e0462c38c1ee632f69cacc880/91637111280.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/16079dc8d26e3a---59088962113.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076d9a179e95---murizokemox.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e40ee8ce5---pipibegijepuva.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/7b146dfd6494e63849646ac479647960/44079994760.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b802ef4f4c8---30978148336.pdfIn PDF document text
    • http://inezorviskids.com/clients/37546/File/70317745515.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/shk908nrr1sma369v83alqciou/paberumasorepageguvukor.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/82373623007.pdfIn PDF document text
    • https://ecohort.info/userfiles/files/wowuperuser.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/2d59jasnvp7h82o0silttck9f4/28939095533.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160f2250760759---92292883430.pdfPDF link annotation
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=ppt+template+2020PDF link annotation
    • 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_off00014580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14580 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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