Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69442d568868bec…

MALICIOUS

PDF

91.2 KB Created: 2021-09-08 05:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 75fe826f369e825dfb5383a49b42fcab SHA-1: a62aa29b73401a31167c8dd288bc722c8d7c5940 SHA-256: d69442d568868bec5f8afa54127541ad43645acb5b39c80b323c3a2f9a0efdfa
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript and a link farm that redirects to multiple compromised WordPress sites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection or execution of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/df524a819c2694bc92d13087af22ec16/rojupasoxo.pdf
    • http://rockfordauburn1966.com/clients/8/85/8549db0cc7d1f63cce07d3be93bd6f3d/File/sewol.pdf
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/cc685f0295a3c3e6f9a8f2f2a73d5305/zutifuv.pdf
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/0cc633dc8ec018ba8b0c7e417a25be74/77628534645.pdf
    • https://network-italia.it/file/litekonasuxixepe.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160725a0d24b09---lizuderatogeli.pdf
    • http://cissi.it/userfiles/files/namesakuzam.pdf
    • http://enricobarraco.com/files/gebujopali.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dffd43c8e33---86763821452.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bb17a816a8c---2230718688.pdf
    • https://www.barefoothoa.com/webroot/js/ckfinder/userfiles/files/81111904208.pdf
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1609818f9cd0dc---48949671888.pdf
    • http://iscyber.com/userfiles/files/sabenuruximuduwebasogipug.pdf
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/d8c69aef853b37fd5ee4f57605920a9f/61399889089.pdf
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc6bd5ae41---noketotuba.pdf
    • https://www.alapan.org/fckimages/file/denam.pdf
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070b3600d643---7345388677.pdf
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a99ca74b38e---damanurolezodozi.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e01d62a9799---lobemutofemofakere.pdf
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/okcmdhko21fikefdm2snv0forf/9044538568.pdf
    • http://tipiland.net/upload/file/gikawamarotufinirit.pdf
    • http://fvv-hohenfelde.de/sites/default/files/files/fogesibusanadujaga.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/d1ldtcntesk0soei3cmcmje506/26316575243.pdf
    • https://jamuiboe.com/webroot/upload_media/43774182563.pdf
    • https://edebmachine.com/images/media/files/danajowi.pdf
    • http://tipiland.net/
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=hansel+y+gretel+libro+pdf+gratis
    • 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_off0000fa1c.bin
0c6e90bf7e746d1f5853ef3a39e7ddd7efce8f70e1e0cc3487c672a307529268
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1C 19876 bytes
font_01_sfnt_off00012dff.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DFF 16792 bytes
font_02_sfnt_off00014616.bin
67593b21922b075f2fc4d559db5548f7f36fee39c5dc2a333547e58b587f6967
pdf-font-stream PDF embedded font (sfnt) at offset 0x14616 10920 bytes