Malicious PDF — malware analysis report

Static analysis result for SHA-256 69baa32d20519ce1…

MALICIOUS

PDF

85.8 KB Created: 2021-09-08 21:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 59a4efd073ccb0c2b46e327c3c447cd6 SHA-1: 4bf0b017e7eafd25795cdddba2feff51a7034c11 SHA-256: 69baa32d20519ce1a09395a6d2cb48c71ae0faabe6c636abaf7697ab4531ae89
174 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple external links, with a high-confidence heuristic flagging it as a malicious PDF. One link, 'https://cantellodetersiviprofessionali.it/uploads/file/doruwawoxuwa.pdf', is algorithmically generated, suggesting an attempt to evade detection. The presence of embedded JavaScript indicates potential for further malicious actions, such as downloading additional payloads or redirecting the user to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://mercuresamuichaweng.com/admin/file/25342740550.pdf In PDF document text
    • https://yellowstonewildlife.com/1943833357.pdfIn PDF document text
    • http://abwferrellpkwy.com/uploads/files/xedoguvowojov.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/wuwegej.pdfIn PDF document text
    • http://2017.letnifestiwal.pl/ckfinder/userfiles/files/letekexejixatabe.pdfIn PDF document text
    • http://www.prctech-th.com/ckfinder/userfiles/files/fizimaberud.pdfIn PDF document text
    • http://smolninskayahotel.com/userfiles/file/noduvakilugevoke.pdfIn PDF document text
    • https://hongdung.vn/ckeditor/images/files/62793757802.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/kolofobukosina.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/0c7dfff2e64940d1ea9e33bb083621c3/88326124500.pdfIn PDF document text
    • http://hoangminhsaigon.vn/@dmin/js/ckfinder/userfiles/files/zadoga.pdfIn PDF document text
    • https://cantellodetersiviprofessionali.it/uploads/file/doruwawoxuwa.pdfIn PDF document text
    • http://www.saaegfpolis.org.br/ckfinder/userfiles/files/mukeritotumanomof.pdfIn PDF document text
    • http://rooptex.com/uploads/tatafebukit.pdfIn PDF document text
    • http://interstyle.org/content/xuploadimages/file/govabutosirirosubizal.pdfIn PDF document text
    • http://hyundaidongdo3s.com/images/files/nagawivalowudodixoxuvetad.pdfIn PDF document text
    • http://www.me.ntou.edu.tw/ckfinder/userfiles/files/20210907_180137.pdfIn PDF document text
    • http://vendsol.com/userfiles/file/82110040988.pdfIn PDF document text
    • http://ghettaetamionarchitetti.it/userfiles/files/butetovimamas.pdfIn PDF document text
    • http://th-hl.com///upload/files/reluxoxel.pdfIn PDF document text
    • http://srmtteaparty.com/uploads/files/202109021124456453.pdfIn PDF document text
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/77882559384.pdfIn PDF document text
    • https://my-natural-style.net/upload/files/68012034830.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612f94d0d2d85---49023567703.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=iso+9000+version+2015+pdf+gratuitPDF 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_off0000e3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B4 11340 bytes
SHA-256: 235a370cdb0ebb7caf6cf4e2b2c038224d496bd6019b6e42b667f1b6001e6658
font_01_sfnt_off0000fe72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE72 19068 bytes
SHA-256: 784d73ec0ed28c7d8e783837ee64934380148535bc15060801fd62e4380304ff
font_02_sfnt_off00012f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F97 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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