Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e2684475655695…

MALICIOUS

PDF

89.7 KB Created: 2021-09-09 11:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 3fce134acfa3186a5d810c89704c779d SHA-1: 9a03028764bc9bcf87567d96ed011455ccc61705 SHA-256: 29e26844756556959f170f906595996768a8cb36ec69e97f8d227052ef81bfd8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 https://wastran.ru/uplcv?utm_term=unidad+3+leccion+1+avancemos+2 PDF link annotation
    • http://saigonradio.com/userfiles/file/2706105647.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/161310031df993---30366552266.pdfIn PDF document text
    • http://sudeoksa.com/userfiles/file/20210905083458.pdfIn PDF document text
    • http://makeyourpartnermelt.com/userfiles/file/21291297188.pdfIn PDF document text
    • http://krishikhabar.net/assets/ckfinder/core/connector/php/uploads/files/fexekawemasuziwe.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/lfamjpo1e6n1quq80eelphosp1/rijonamudupomuvijozamum.pdfIn PDF document text
    • http://nhabe.com.vn/ckfinder/userfiles/files/baruwibadapi.pdfIn PDF document text
    • http://ayurveda-shiatsu-nice.com/upload/files/vigejedorizafepaburefot.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/36093424167.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/2992431190.pdfIn PDF document text
    • https://spa-salon.ru/ckfinder/userfiles/files/18725250748.pdfIn PDF document text
    • https://pragatitic.org/ckfinder/userfiles/files/80312513474.pdfIn PDF document text
    • http://www.ssc-ras.ru/ckfinder/userfiles/files/duferafaji.pdfIn PDF document text
    • http://boek.se/bilder_umeny/File/66936234510.pdfIn PDF document text
    • http://giasuthanhdat.vn/Images_upload/files/xabunevavuvak.pdfIn PDF document text
    • https://twinslock.com/locktactyuma/userfiles/file/tetagesaguw.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/43413263264.pdfIn PDF document text
    • http://lednotice.com/userData/board/file/92115390065.pdfIn PDF document text
    • http://mrs-edu.com/sribati/editor/uploadfiles/23909293860.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/suferinevolif.pdfIn PDF document text
    • https://acrgruppe.de/userfiles/file/36649428881.pdfIn PDF document text
    • https://www.sesc-am.com.br/Selecao/ckfinder/files/naponokazab.pdfIn PDF document text
    • https://yesilkoyluleriz.biz/resimler/files/79282949894.pdfIn PDF document text
    • http://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/vosofuzexavisavovufo.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_off0000f3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D5 20396 bytes
SHA-256: 8b002c741000d3ef01b46caa2976e4e294bae71728bb58aabffd8332f9fa7d70
font_01_sfnt_off0001284e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1284E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14065 10748 bytes
SHA-256: 4fdc1d5f1d2be902312ff91ca418f09a677bca4684f58dea7831ae47c75785f4

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