Malicious PDF — malware analysis report

Static analysis result for SHA-256 094d24f71c9b4f6d…

MALICIOUS

PDF

81.8 KB Created: 2021-09-01 18:33:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 20b4ba0988e44fe2c6fe74fa833af36b SHA-1: 0458caecb5e7b424ca9f134117ea1b6b3ed6320b SHA-256: 094d24f71c9b4f6d7721af653f0db3a88fa12e6f736dc5601c76daa7318c4628
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to numerous external URLs, many hosted on compromised WordPress sites. The presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to potentially malicious or phishing content, possibly as part of a broader campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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 https://drafthe.ru/uplcv?utm_term=websites+for+asking+questions+and+get+answers PDF link annotation
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7d3341d157---68713283086.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/161216bf2e96be---vumepeda.pdfIn PDF document text
    • https://bold-iot.com/uploads/files/202108201517137781.pdfIn PDF document text
    • http://podolsk-kondicionery.ru/upload_picture/file/fidevomik.pdfIn PDF document text
    • http://bbgannualseminar.com/clients/6/60/607ac775fa755cf068047886b2bbe24d/File/saxogapelumozu.pdfIn PDF document text
    • http://dezmaster.com/userfiles/file/jojusuwe.pdfIn PDF document text
    • https://flexi-cms.com/uploads/file/gelijojuselebirujob.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8382e8e48---gukefonitigorawevuwofu.pdfIn PDF document text
    • https://aedwea.com/upload/foto/30957334028.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609423ed90b14---varaxowagidipizu.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/3fbf91ae2a9b2d547302747bd1cc4896/61744156289.pdfIn PDF document text
    • http://we-women.de/default/files/uploads/file/86712141810.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/36ofakut5bk89tlujc9t18s9qs/56276301641.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/79a6fab0b7cc6973e92fcb43a27348d6/damox.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/76104718236.pdfIn PDF document text
    • https://mountainbrookbuilders.com/home/mountain/public_html/ckfinder/userfiles/files/fodexopegezet.pdfIn PDF document text
    • https://coastalstudio.com/images/main/file/36706860954.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160c020a0aaad9---pumotetanasevukazow.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a83760de122---33150476760.pdfIn PDF document text
    • http://retrolondontees.com/userfiles/file/gowawaduxus.pdfIn PDF document text
    • http://classicalgardenstatues.com/uplds/file/91332511549.pdfIn PDF document text
    • http://thedigitalscorecard.com/userfiles/files/7402328031.pdfIn PDF document text
    • https://anfauglir.com/images/file/89551137618.pdfIn PDF document text
    • https://www.jnvhardoi.org/ckfinder/userfiles/files/61753540840.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/0437290e29e3f10d08b01dee8a6b3905/fidadelumag.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB23 11040 bytes
SHA-256: e9ee892820b4eb1a515519b4d66d03b0b785296143adda167dd176bbbede4787
font_01_sfnt_off0000f48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48A 17104 bytes
SHA-256: 862ecec2f13c05c21650ef01aff5f93bce944c031a9660c6e82c417f322f1191
font_02_sfnt_off0001212d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1212D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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