Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06263dd698c6d84…

MALICIOUS

PDF

72.7 KB Created: 2021-09-23 19:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d715b874e691dfcdc9462d85df2090fd SHA-1: 326450580d93e743548857681a916ea4fe218d18 SHA-256: f06263dd698c6d847f6f947e4af4c0e72288eb7ee46d3f7a56dc50215090a068
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous embedded links pointing to various domains, suggesting a phishing or malware distribution campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates a link farm on disposable hosting, reinforcing the malicious nature of the URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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.
  • 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=mortal+kombat+release+date+time PDF link annotation
    • http://gartenbaukoeln.de/uploads/files/tududexepavojexubesugew.pdfIn PDF document text
    • http://sevgineslianaokulu.com/ckfinder/core/connector/php/uploads/files/61143222857.pdfIn PDF document text
    • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/16824052281.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614574d479d03---wiboxer.pdfIn PDF document text
    • http://bargiel.com.pl/ckfinder/userfiles/files/91191246274.pdfIn PDF document text
    • http://ecme.site/2015/vat/upload/files/43821499828.pdfIn PDF document text
    • https://shindah.com/images/ckeditor_img/files/53422839112.pdfIn PDF document text
    • https://unitedfightalliance.jordanadams.com/ckfinder/userfiles/files/34510473308.pdfIn PDF document text
    • http://portalinmobiliario24.com/uploades/fckeditorfile/98186070089.pdfIn PDF document text
    • http://tolltisztitas.eu/userfiles/files/xuriwaponuxunepevejagopot.pdfIn PDF document text
    • https://kudamatsu.org/userfiles/file/28264915227.pdfIn PDF document text
    • http://omegapizza.net/uploads/files/88023830113.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/files/45619064815.pdfIn PDF document text
    • http://transcash.com/ci/userfiles/files/80315096386.pdfIn PDF document text
    • http://mobil-tech.com/files/38571769626.pdfIn PDF document text
    • http://lexuspolymers.com/assets/ckfinder/userfiles/files/nubinumatan.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/30511744547.pdfIn PDF document text
    • http://unite-chem.cn/upload/files/fagixenukagusutinizixez.pdfIn PDF document text
    • http://progettogeometra.it/userfiles/files/moxudirinalezumudanijapep.pdfIn PDF document text
    • http://thebeautyofdesign.nl/ckfinder/userfiles/files/timililojiso.pdfIn PDF document text
    • https://wanna-drive.nl/files/File/bajixifufoponupigotekoju.pdfIn PDF document text
    • http://vin-baietii.ro/ckfinder/userfiles/files/28196107179.pdfIn PDF document text
    • http://fli.edu.mn/ckfinder/userfiles/files/64405333661.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_off0000b91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB91A 10528 bytes
SHA-256: 7985e13a49f470331283b853856824dbeadbb7d6006bc20c199f160a6778b534
font_01_sfnt_off0000d120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD120 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE932 17224 bytes
SHA-256: 74d5b9fb6e574b44d1b02ec0db5d1d58dc589581739ff5b96f733af3c6bed360

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