Malicious PDF — malware analysis report

Static analysis result for SHA-256 8214b601bccffb0d…

MALICIOUS

PDF

65.5 KB Created: 2021-02-27 23:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b090f939c02bcebb0f04dc2cddf4c5c6 SHA-1: 4b7ab602551b2f895545a1b5261915b673886597 SHA-256: 8214b601bccffb0d0622add78eda0c3c1d17f3fe8cbd59faa58bd031b46d5753
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://gimoguvi.ru/aws?utm_term=jane+austen%2527s+persuasion+2007+watch+online PDF link annotation
    • http://lovemecompletely.com/gaterunetawi6eqrv.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuguxovim/Diev8eu/wilefefexopeto.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/is_clint_eastwoods_movie_the_mule_based_on_a_true_story.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368746/normal_5fc8263443ee5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424361/normal_6031e41766111.pdfIn PDF document text
    • https://wirupexulabajes.weebly.com/uploads/1/3/5/3/135322132/5199992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401983/normal_603aaf23eb15d.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/cloud_brushes_for_photoshop_cc_free2r4vf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483839/normal_6007a2f36a1d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473340/normal_5fed7a8b73135.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/gisepinawinenedagfpzl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475379/normal_6023c5ee3e4fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388038/normal_5ffb75f1c64e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393348/normal_5fefea2c94522.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kofaxafogi.myartsonline.com/an_atlas_of_anatomy_for_artists.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_off0000c28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC28A 5492 bytes
SHA-256: 3641c53d6074efd0afc9e047f9b9624ddb848b39892c5ef47babb8bd44036a04
font_01_sfnt_off0000d558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD558 10464 bytes
SHA-256: 68c8f5bd32f8f9264fbfce3e62bb62c36d4c3a5d884e028e8d3f0cf215a8dcc8