Malicious PDF — malware analysis report

Static analysis result for SHA-256 15df41cf880a6851…

MALICIOUS

PDF

85.0 KB Created: 2021-09-22 12:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 77b623b20278ff941e15e173beaef501 SHA-1: b73ab0846b5bb88931215a2e2fca701e475a9302 SHA-256: 15df41cf880a6851a022b5b0056d7c4cb5d1ab3c7c7782c7f1c74914c4b4ab25
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing sites or download further malware. The embedded JavaScript is a common technique for executing malicious code within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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 https://wastran.ru/uplcv?utm_term=2gomovies+malayalam+movies PDF link annotation
    • http://www.agot.pl/upload/file/dejirobov.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/30pfmrh5b7lc572f0rkbcu5kau/sekibogomegozujolikoze.pdfIn PDF document text
    • http://lepetitjaunais.com/userfiles/file/96007842529.pdfIn PDF document text
    • https://loyallcanada.net/editor_files/file/3567471894.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16148e51e1ae3f---60866255475.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/50551272139.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/luroxiwiwofebela.pdfIn PDF document text
    • http://jcpingie.be/public/files/nixuv.pdfIn PDF document text
    • http://thaisomboonautopart.com/userfiles/files/balefe.pdfIn PDF document text
    • http://ediljolli.com/userfiles/files/runowavu.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/16315917578962067387.pdfIn PDF document text
    • http://gaudi.tw/upload/file/lesozatafunegavidiwowe.pdfIn PDF document text
    • http://qdjshg.com/files/file/63652592884.pdfIn PDF document text
    • http://teraval.cz/res/file/vubaxixokijeson.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/rufitepoxavam.pdfIn PDF document text
    • http://speed-r.com/js/upload/files/febaretovamebatubekeb.pdfIn PDF document text
    • http://hillsdalehorseboarding.com/ckfinder/userfiles/files/banigomefawajidukuzizej.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/vezupezesidezo.pdfIn PDF document text
    • http://kerama.altrodesign.eu/ckfinder/userfiles/files/sejazewatewebuxefuzulib.pdfIn PDF document text
    • http://qlionshousing.ca/userfiles/file/56834976030.pdfIn PDF document text
    • http://liavanhaeringen.nl/userfiles/files/xedovugegutawenoxokat.pdfIn PDF document text
    • https://paulogomeslda.com/userfiles/file/11660150254.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_off0000e772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE772 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF89 10352 bytes
SHA-256: 2eb82e437972857d01b242780ca241f2ada9fda281b909b701ae1f8cf599518c
font_02_sfnt_off000116f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F9 18172 bytes
SHA-256: 205e1308be0ad85aae1933d849db16c72ea450366cb0d5eb443acb316c5501fb

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