Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eacdd805faa7438…

MALICIOUS

PDF

74.5 KB Created: 2021-09-08 15:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: d5d400b9afb9c68bb2aa33779aca3f65 SHA-1: a253e8e4a33926dfa611233a40d161253543029c SHA-256: 6eacdd805faa7438ffe395ccd1c569cabd1f7a284e594ff29e43a55b2eebc20e
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://oniceh.ru/uplcv?utm_term=sinonimos+e+antonimos+em+pdf PDF link annotation
    • http://radio-salsa.com/php/rs/filesupload/file/tagifebuditerulex.pdfIn PDF document text
    • http://orvositudasbazis.eu/images/upload/file/xarikobumololojifomu.pdfIn PDF document text
    • https://ooobelkom.ru/ckfinder/userfiles/files/83267382640.pdfIn PDF document text
    • https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/dapodenapir.pdfIn PDF document text
    • https://omprintandpack.com/userfiles/file/17715109972.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/50077186261.pdfIn PDF document text
    • https://dynasty888.com/image/files/20210908_055714.pdfIn PDF document text
    • https://lifeteacher.tw/uploads/files/202109010657014726.pdfIn PDF document text
    • https://akanaymatbaa.com/calisma2/files/uploads/21057126469.pdfIn PDF document text
    • http://transchem-tech.com/Uploadfiles/files/zipomemer.pdfIn PDF document text
    • http://sowa-architekci.pl/userfiles/files/85183206551.pdfIn PDF document text
    • https://securitydm.net/slicice/file/laritidafovelife.pdfIn PDF document text
    • http://dichvuhieuchuan.com/upload/files/36979868985.pdfIn PDF document text
    • https://flyags.com/editorResources/file///vurazilitilakawilowumix.pdfIn PDF document text
    • https://samirkumarpaul.com/ckfinder/userfiles/files/24953038966.pdfIn PDF document text
    • http://e68momo.com/shopadmin/upload/files/lobalilomelaneriwuzan.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/69201336852.pdfIn PDF document text
    • https://fong-cai.com/upload/files/fexakeremodemitixekesi.pdfIn PDF document text
    • https://airflow-skateboards.com/userfiles/files/77435036054.pdfIn PDF document text
    • https://ibliberia.com/ckfinder/userfiles/files/92127587803.pdfIn PDF document text
    • http://mpti.ru/userfiles/file/98997304398.pdfIn PDF document text
    • https://surupaceanu.ro/ckfinder/userfiles/files/jagijugezabesowo.pdfIn PDF document text
    • http://albarossa.jp/js/upload/files/43115138071.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_off0000bc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC2E 18328 bytes
SHA-256: 2fa5c8aad89147922d8d8275f3e54f9ebf220558220fc2123a63c9d0cf749209
font_01_sfnt_off0000eac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC5 10588 bytes
SHA-256: 640e13ce166fb3d75561fe435205dfac82c3f89d286fe19182100e2dd0a637de
font_02_sfnt_off000102e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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