Malicious PDF — malware analysis report

Static analysis result for SHA-256 03cbf655f94100ff…

MALICIOUS

PDF

72.0 KB Created: 2021-02-16 08:39:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a889182fdbd023239e4c9919e7e32540 SHA-1: 32458790bda1d38710d2d2d4a3b3200544744eeb SHA-256: 03cbf655f94100ffa0bbd7f42f7f5501f8b2ce811cd3471fe079029eabe98b30
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=bass+trombone+slide+chart+pdf PDF link annotation
    • https://dobopekajami.weebly.com/uploads/1/3/4/3/134314215/5984074.pdfIn PDF document text
    • http://muldwych.com/molar_mass_of_libruhgph.pdfIn PDF document text
    • https://wixokaregojes.weebly.com/uploads/1/3/2/6/132681478/f36142275f.pdfIn PDF document text
    • http://minuette.me/zabudunafwb0uw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450040/normal_5fce58f3c32ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378834/normal_5ff5514991d42.pdfIn PDF document text
    • http://idealicaitaly.site/61022487729wnel0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410006/normal_5fe2a0f35acb7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464311/normal_5fe35fd621b66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474218/normal_5fe453c2a8876.pdfIn PDF document text
    • http://test123test.xyz/carrom_pool_mod_apk_android_1_com2c3tk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375690/normal_60097b931e08a.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/excel_vba_set_variable_as_sheetd1j83.pdfIn PDF document text
    • http://ludshop.xyz/mineral_wells_fossil_park_mineral_wells_txr1apr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446502/normal_60283c98b0c59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_5fe49ed300fde.pdfIn PDF document text
    • https://rasafidi.weebly.com/uploads/1/3/0/7/130776861/c9693.pdfIn PDF document text
    • http://kostlike.site/zamogitepevew1rt8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn 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_off0000c60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC60E 5584 bytes
SHA-256: e28d90841d2182b8b1d34c5239a1fdc91059376f01e3a40d23057ea82a9720cb
font_01_sfnt_off0000d8db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DB 10700 bytes
SHA-256: 6c90fc4a08d5aa3e81960e4c3c48c7339f1e03b9da72f6260b975cc8800c4c35
font_02_sfnt_off0000fd6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD6B 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd

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