Malicious PDF — malware analysis report

Static analysis result for SHA-256 89306283bad9286b…

MALICIOUS

PDF

71.2 KB Created: 2021-02-27 18:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 56bd599c257d706d65812093d3d977ef SHA-1: 0f1ea8d14fe0e63720b65f4985c4a90c6f86b177 SHA-256: 89306283bad9286b7927fce3460dcfa0e965b9d80059e747a58f75bfa011784e
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://lozipotod.ru/123?utm_term=why+is+my+netgear+range+extender+not+working PDF link annotation
    • https://tenemetit.weebly.com/uploads/1/3/2/6/132696414/42eab5fe2069c1.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/8167971.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387810/normal_603224dc3f474.pdfIn PDF document text
    • https://zalivibutadugaf.weebly.com/uploads/1/3/5/3/135391941/vikana_labisabijamunif_salidaf_boxuwegizazu.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvuvidova/Rfohehg/10655556677.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/clgedhd/car_runs_rough_at_2000_rpm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413225/normal_5fd6a252002e1.pdfIn PDF document text
    • https://setitafonoje.weebly.com/uploads/1/3/1/8/131856277/buluruvarujozanov.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/nisoxow/geology_field_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/22356066373.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/chaar_sahibzaade_full_punjabi_movie_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/fulutavisokidiwimofivuf.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/teloxeminamu.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/58689555025.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/ayub_bachchu_photo.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_off0000d90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90C 5544 bytes
SHA-256: 99c2309e845510cd26f18dba3b5b522c3d498f3bf61707dc610f7ef9b1a48e7b
font_01_sfnt_off0000ebe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE1 10476 bytes
SHA-256: 66866d348d55501ec809df8c6b1b36787cf6e1957406b5d6132312930bdac24b