Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea20079b3149b158…

MALICIOUS

PDF

85.8 KB Created: 2021-09-23 21:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 870f569e8712565e093224ed70b04442 SHA-1: 77c31c3c97bb414d91aaaeac7a16b7d552aaa035 SHA-256: ea20079b3149b15899e195b3ab7132a0fd0717adc92e50e97f2c5f4e4eb16f92
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that point to external websites, some of which are hosted on compromised WordPress installations or disposable domains. The primary purpose appears to be directing users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://medvor.ru/uplcv?utm_term=enable+group+tabs+chrome+android PDF link annotation
    • http://papianiarch.it/userfiles/files/90956600370.pdfIn PDF document text
    • http://brickform.cz/obrazky/files/15760159325.pdfIn PDF document text
    • https://kingbakerypans.com/userfiles/file/84642578230.pdfIn PDF document text
    • http://lingvastar.z-i-g-z-a-g.com/userfiles/files/13312534439.pdfIn PDF document text
    • http://energyexcess.com/userfiles/file/tasufarexevonazapavi.pdfIn PDF document text
    • http://prabashproperties.com/ckfinder/userfiles/files/60994629378.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614a3389b19ce---feropusegamenete.pdfIn PDF document text
    • http://houselandia.ru/files/94143722284.pdfIn PDF document text
    • http://tndgdemo2.com/ckfinder/userfiles/files/98175241274.pdfIn PDF document text
    • https://gentrilieu.vn/userfiles/file/tokufanusa.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/ralabutejotizevoxesamu.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/b2a4ce077da833dff5333b095904d9a8/lalisubinefurorem.pdfIn PDF document text
    • http://spzpoz-zdunskawola.pl/upload/file/35108123728.pdfIn PDF document text
    • https://peptidturkiye.com/ckfinder/userfiles/files/38789477450.pdfIn PDF document text
    • https://showdetango.com/bafa/userfiles/file/zikozamut.pdfIn PDF document text
    • https://thucphamtruongxanh.com/Upload/files/57626192068.pdfIn PDF document text
    • https://amoslodge10-org.alljobsinliberia.com/ckfinder/userfiles/files/zezoz.pdfIn PDF document text
    • http://c-six.it/userfiles/files/bumab.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/0696aceb77dd78842f07c4575896213d/11097575614.pdfIn PDF document text
    • http://goodlife88.com/uploads/files/49082588210.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161389dce99669---81087615208.pdfIn PDF document text
    • http://z-him.ru/userfiles/file/82198178058.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/sonomasesoradape.pdfIn PDF document text
    • http://www.siposferenc.hu/html/zexogalazewomokole.pdfIn PDF document text
    • http://cukrarnakolbaba.eu/obrazky/files/gonimagakuzajopanifusux.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_off0000deb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB0 11184 bytes
SHA-256: d1cd330a6536c68d3937941a9b49d83bf5e799ca2a02188d8f627dcf184f1de4
font_01_sfnt_off0000f834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF834 21636 bytes
SHA-256: 5ae43fa51c7ac7b51977b1d1084e9489d3d1c7cafe9593e96ef4327460565f9f
font_02_sfnt_off000130fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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