Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b0e346b74ee8b8…

MALICIOUS

PDF

82.0 KB Created: 2021-09-09 23:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 25acc2ef52aa9775ed04c5a6ddc1bcc8 SHA-1: aba52831c09740e92517d00c701e150ff9df20e9 SHA-256: 94b0e346b74ee8b87b0e2b0f0b0d05ac6acbc64468ab90a8a91426beba4f29a6
86 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by an ML classifier as malicious. It contains numerous embedded URIs, many of which point to disposable domains and IP addresses, indicating a link farm designed to redirect users. The presence of external URIs and the ML classification suggest an attempt to deliver malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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=i+believe+in+a+thing+called+love+maurene+goo+pdf PDF link annotation
    • http://skyrybupaslaugos.lt/uploads/files/78745049210.pdfIn PDF document text
    • http://primethailand.com/ckfinder/userfiles/files/66682041326.pdfIn PDF document text
    • http://clarklawtexas.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/13822734939.pdfIn PDF document text
    • http://tatvideo.ru/ckfinder/userfiles/files/26751082181.pdfIn PDF document text
    • http://pi-consulting.ch/download/mijijuzawuruzixudozi.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/8fcefd5f5556a46f8501f7ac610ab2f5/depopanudoduraxaj.pdfIn PDF document text
    • http://studiotipaldo.com/userfiles/files/26984538088.pdfIn PDF document text
    • http://phubozena.pl/userfiles/file/44395950836.pdfIn PDF document text
    • http://jcnjl.com/userfiles/files/92478934103.pdfIn PDF document text
    • https://pioneerlift.com/upfiles/editor/files/jumijan.pdfIn PDF document text
    • http://gapp.fr/medias/files/nasoruzumamaxevokuzegofu.pdfIn PDF document text
    • http://radyoislam.com/resimler/files/48371885121.pdfIn PDF document text
    • https://kungfuclasshongkong.com/louis/taichi/ckfinder/userfiles/files/demupasalegagegozafaziv.pdfIn PDF document text
    • http://music-saikung.com/ckfinder/userfiles/files/174821042.pdfIn PDF document text
    • http://masan315.net/board/imagefile/file/wibotusilaviwimaxikivuw.pdfIn PDF document text
    • http://178.62.148.222:300/ckeditor/ckfinder/userfiles/files/25048633813.pdfPDF link annotation
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612f84bebf576---sumis.pdfIn PDF document text
    • https://urologasdainys.lt/userfiles/file/65694844259.pdfIn PDF document text
    • https://doosradashak.in/ci/userfiles/files/zuwazufawinefolix.pdfIn PDF document text
    • http://vilocom.net/webroot/img/files/9851097967.pdfIn PDF document text
    • https://www.tzounakos-insurance.gr/ckfinder/userfiles/files/46495121778.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_off0000db15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB15 17804 bytes
SHA-256: 3162dcdf33428a3c81c9057917d231afe20c611e81e5c355a59c281df353d32a
font_01_sfnt_off00010898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10898 11156 bytes
SHA-256: 9e93c3073e858835a88a5ec0ed5dc8d60beb9c4319536ab0dbee671aa8f437e9
font_02_sfnt_off0001220e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1220E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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