Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb582a07e32587f…

MALICIOUS

PDF

70.7 KB Created: 2021-01-31 06:48:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 9a8f45cce037ab0d46d53502e2e15cdf SHA-1: 0f8c1d45c7d40b94a6df46d89ef17da948d9d66e SHA-256: 8cb582a07e32587f6f1a4b2d17d353cdc82472ab10fc538db539734ba1e86fd5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/123?utm_term=the+law+of+attraction+michael+losier+pdf PDF link annotation
    • http://7lessons.space/nolegenemewepks9k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456420/normal_5fe8023dda779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481527/normal_5fda465902512.pdfIn PDF document text
    • http://copyright-supporthelp.com/63919756589dbea4.pdfIn PDF document text
    • https://kovajokuluvemu.weebly.com/uploads/1/3/5/3/135335912/tiguvum_femiluz_loxabakasij.pdfIn PDF document text
    • http://mebelrostov.ru/19826978358is4bu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_6014f468913a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488315/normal_5fd29e03c3c90.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/firudegix/39137689195.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/jevixelik.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/bigiranevoxugewegem.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/education_logo_designs_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/dashboard_templates_in_tableau.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/95006521619.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/2nd_amendment_text.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48A 5436 bytes
SHA-256: c3e8199c292d62a843940c82d29ea2e710e448d45c8b5fbf810b42ad9ab586ea
font_01_sfnt_off0000e6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EE 11800 bytes
SHA-256: 50f4f3ea1001e6a460226dec4d7925ee1629d396e6e838a94c9a361307d4a490