Malicious PDF — malware analysis report

Static analysis result for SHA-256 edaaab5a80bafcd7…

MALICIOUS

PDF

70.9 KB Created: 2021-08-30 11:34:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: bd492fdae729f77607c81b3daa426213 SHA-1: b1f065b3835cedf75090eda3f560ca508caf35d6 SHA-256: edaaab5a80bafcd7ec1efad8bb8d7868f35cdddef3e2d70af66b7fbabd135d22
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress upload directories and disposable hosting sites, suggesting an attempt to distribute malicious content or conduct phishing. The presence of numerous external URIs and link farm heuristics indicates a high likelihood of user redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/4ke4o9m1vkcme3j6rshpcndn95/30860294786.pdf In PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9d75765f18b3bf075282651c956c2c29/mikajemetuduvabapozum.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/ba506ccd58cb2de95a53e2078a77447d/laxapifotap.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd01b1095de---rirasemepoxi.pdfIn PDF document text
    • http://dgjst.com/upfile/file/vasilarajopekixejodabozix.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/utbskvputvnbjmr585hmbkprio/18880943243.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607685e0dba48---61237173485.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/um544mn5r85a7ff6i7d9iu04qe/lujedasepot.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609857ff504da---junijuluwodejogepurag.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/25134426746.pdfIn PDF document text
    • http://www.tokyomagic.jp/images/library/File/87828538357.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/81791346447.pdfIn PDF document text
    • http://grafosaleservice.cz/images/fck_editor/file/gesusaxisazizajalekem.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/tefawadudedaxewejokem.pdfIn PDF document text
    • https://espritgt.com/userfiles/file/weranuporomijikeziveku.pdfIn PDF document text
    • https://www.vasutaszeneiskola.hu/ckfinder/userfiles/files/xelafobobasovidanilukiga.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/35eb216abae3b35ac48424f8ffded45e/xutabanorekogepaxitibeta.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/0g2il29r254si4ajrb70j433l2/79335212895.pdfIn PDF document text
    • https://peterdegendt.be/file/mijetovuzonekuvopidogafo.pdfIn PDF document text
    • https://daismene.it/file/88773690498.pdfIn PDF document text
    • http://mishelik.ru/userfiles/file/7621638442.pdfIn PDF document text
    • https://zlato-eu.cz/upload/files/91674145278.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/24ef1c1797870b08209d64093036bbbc/80996181487.pdfIn PDF document text
    • http://synergytaekwondo.com/click2buy_newp/userfiles/file/36890327531.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3b009d925---86339879410.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=towson+university+physical+therapyPDF link annotation
    • 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_off0000b454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB454 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cc6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6B 10800 bytes
SHA-256: 287ef27d4b1b4bd77720595ee430b015a2ce2ca9ea99951e28cc79a1b856d186
font_02_sfnt_off0000e561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE561 15544 bytes
SHA-256: b391411c42f9acfd40472efdc3fda8a6bc9c592f8cb52a3a6af6080d973a7856

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