Malicious PDF — malware analysis report

Static analysis result for SHA-256 76add9806d844c6c…

MALICIOUS

PDF

79.6 KB Created: 2021-10-08 08:57:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: d4420fbb589ff172f1c7393613dd3032 SHA-1: c7081f31ea24c72bf479b25bf65a4bb40078b93d SHA-256: 76add9806d844c6cbeb8ba45c7ed9634a5cc4586e4210aafc2eff3bddb78e1a5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution campaign. The PDF structure and embedded URIs indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://allytemp.ru/uplcv?utm_term=interactive+dice+for+kids PDF link annotation
    • http://thepokeluau.com/uploads/files/xoxavusejudafuwexofuzer.pdfIn PDF document text
    • https://shoppingplanet.ro/ckfinder/userfiles/files/79201114174.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/82403648495.pdfIn PDF document text
    • https://quangcaowebsite.xemlaco.com/uploads/files/jatasimizefifelodum.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents/files/poputajolamuraviwasefodu.pdfIn PDF document text
    • https://buzascsaba.hu/userFiles/file/3550590885.pdfIn PDF document text
    • https://alate.org/admin/fckeditor/editorfile/gisetoxeliwajelobuduwesu.pdfIn PDF document text
    • http://websurin.net/UserFiles/File/guguzuki.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1614b681cbec23---piparodogire.pdfIn PDF document text
    • https://nabijdefossa.nl/upload/files/82919859611.pdfIn PDF document text
    • https://icnj.net/ckeditor/ckfinder/userfiles/files/98098748509.pdfIn PDF document text
    • http://irvinenott.co.uk/ckfinder/userfiles/files/wuniwupavepogawogi.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/72154866442.pdfIn PDF document text
    • https://showerdrainplus.com/uploads/files/202109261736275193.pdfIn PDF document text
    • http://live-net.it/file/87457909583.pdfIn PDF document text
    • https://sanidom.pl/img/file/nozobopawole.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/14612639922.pdfIn PDF document text
    • http://cellesekorea.com/ckupload/files/futejumezowokug.pdfIn PDF document text
    • http://volareinmongolfiera.it/userfiles/files/ruzozu.pdfIn PDF document text
    • http://es-iyashinomori.net/yamituki-n/uploads/files/gutedumakijaxo.pdfIn PDF document text
    • http://futboltotal.net/images/files/62960936490.pdfIn PDF document text
    • https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/gukojofetorinopasidot.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_off0000d306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD306 10532 bytes
SHA-256: 94c116bffa882407942aa5915533e53e4e439af085eebe0025adf4c7cc4a156f
font_01_sfnt_off0000eb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB37 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10349 17744 bytes
SHA-256: 28a418d8e1ab9c2eb3affe3ed9956caf8b0fa84770eb61864f27d5343d2e0d05

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