Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c7f2030d2037d8…

MALICIOUS

PDF

70.8 KB Created: 2021-09-26 04:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 68634b14a7c3e69fa833cf8ba40c92c9 SHA-1: 770de508a86990d6c118f6b3738c702514774c64 SHA-256: e0c7f2030d2037d873c99b64077ae4ddc156ce5410f2becec6acc7dc075d5fad
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with a high heuristic score indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • 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.
  • 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 http://www.painters-restaurant.com/userfiles/file/91391508831.pdf In PDF document text
    • https://niboparis.com/upload/fckeditor/file/1632143765_1.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/kibenumesuwakelaxefefate.pdfIn PDF document text
    • http://capableapp.com/uploads/files/rogiwaku.pdfIn PDF document text
    • http://iact2001.com/userData/board/file/wekoxevejat.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca7f6e372f---raputimufelebofuren.pdfIn PDF document text
    • https://nileagriculturalindustries.com/file/dumutononipizavujixe.pdfIn PDF document text
    • https://atrax.eu/userfiles/file/7091710625.pdfIn PDF document text
    • http://ewtch.com/upload/files/mufiwutaroxa.pdfIn PDF document text
    • https://xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/74118315482.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/35428767283.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/jfqc7b6v74ns0t8gqatq0nphft/8938251098.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/sumonuxadowaj.pdfIn PDF document text
    • http://everintelconsulting.com/upload/file/202109160957000670.pdfIn PDF document text
    • http://lmalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xevikozedatusodefosuku.pdfIn PDF document text
    • http://phyllisrubensteinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/23256938100.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/73405930459.pdfIn PDF document text
    • http://billagelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xudaj.pdfIn PDF document text
    • https://schachverein-marchhoefe.ch/fcsr/news/upload/file/rerowigowafadutewobufaxa.pdfIn PDF document text
    • http://ph-easycome.com/userfiles/file/43324237180.pdfIn PDF document text
    • http://na-bytecek.cz/UserFiles/File/dipibelaboni.pdfIn PDF document text
    • https://datajournonepal.org/files/dofekabivuf.pdfIn PDF document text
    • http://cctechlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/guzezumavavudumite.pdfIn PDF document text
    • http://dr-temt.ru/images/file/61073996449.pdfIn PDF document text
    • http://dungcumaymoc.com/Images_upload/files/73632750521.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=kingsman+2+free+moviePDF 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_off0000b4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ccd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD8 10588 bytes
SHA-256: fdde4aaa3eddc467ff7ecda503159bdb5d10f27e2eb2bfd6d315f097351b2d78
font_02_sfnt_off0000e50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50D 16028 bytes
SHA-256: 57f37dbedd2da67620533580bfb0696ce9e00d6135ba493bff403242954a52aa