Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7d56c59813c390…

MALICIOUS

PDF

84.6 KB Created: 2021-09-09 01:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9d52330446873aacecaa2c93f6824a17 SHA-1: 650b64e8ced4a0f3f0bd44b8db418d4ecfefb687 SHA-256: 6e7d56c59813c390d7dfb39a2723f2231befe703ff6830c0af0c4dab102dd3a6
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs pointing to various domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of embedded JavaScript further supports the malicious classification, likely used to facilitate exploitation or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • 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://pixomot.ru/uplcv?utm_term=android+egg+easter PDF link annotation
    • http://ttworld.hu/uploads/content_files/files/50832218131.pdfIn PDF document text
    • http://campfirewtx.org/userfiles/file/bazomilozexirepuk.pdfIn PDF document text
    • http://ty-int.com/files/files/nosus.pdfIn PDF document text
    • http://www.wiz-fac.com/uploadImg/file/60304652027.pdfIn PDF document text
    • http://chapelguild.com/images/usr/60262027795.pdfIn PDF document text
    • http://kedehg.com/ckfinder/userfiles/files/fimese.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/161352d12497bb---79885376167.pdfIn PDF document text
    • http://saveursetsavoirs.fr/image/file/josuritututu.pdfIn PDF document text
    • http://wacommerce.net/home/integrity/public_html/ckfinder/userfiles/files/zovusozexatiwote.pdfIn PDF document text
    • http://pointerboards.com/uploads/admin/files/84890272188.pdfIn PDF document text
    • http://efsanepin.com/calisma2/files/uploads/sepisonolevegapoku.pdfIn PDF document text
    • https://memo-log.com/userfiles/file/25088796533.pdfIn PDF document text
    • https://izr.fr/files/wexereberamux.pdfIn PDF document text
    • https://appvid.eus/userfiles/files/zipevanixikerenadepunaso.pdfIn PDF document text
    • https://coonvalleycc.com/userfiles/file/63738325474.pdfIn PDF document text
    • https://soyana.de/js/ckfinder/userfiles/files/92147435187.pdfIn PDF document text
    • http://gyndoktors.de/ckfinder/userfiles/files/darusezoser.pdfIn PDF document text
    • https://nirmalujjwal.com/public/ckfinder/userfiles/files/korasunepikalepekamekivix.pdfIn PDF document text
    • http://poaglasses.com/uploads/files/202109010535137188.pdfIn PDF document text
    • https://hopadive.cz/ckfinder/userfiles/files/jawobuxubevidotagas.pdfIn PDF document text
    • http://delannahotel.com/user_img/file/gitilobuzinoxu.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134f84679b06---jafemujepig.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_off0000e6d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE8 10356 bytes
SHA-256: b428c13c9f6e326be2545b6ca0b0d84edc2e8d753a9d06097ab7cda9e50dd9ec
font_02_sfnt_off00011638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11638 18080 bytes
SHA-256: d4c3d3c2c19ebc53d5d6cc4a467dcb5356c2e81942901082847ce9902d1cf6d9

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