Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad943298abef007…

MALICIOUS

PDF

71.7 KB Created: 2021-02-28 22:06:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 78b5ed2d8cc76040df2088c3d2ae3e2f SHA-1: c249b9f25e8c5f0e34f844cd19760b2b30fe91dd SHA-256: 5ad943298abef00792160f26654efe0051ffcb86e2bc18c6c99a7ac019656867
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://nipisod.ru/award?keyword=how+to+program+my+prestige+remote+start PDF link annotation
    • https://puwikemumej.weebly.com/uploads/1/3/1/4/131454306/xebaxasuloxuka-lagolu.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/gomimuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5ff285d239589.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369901/normal_5fc811a9eb790.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447250/normal_6002e84c9baaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404112/normal_6008c015063be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392650/normal_5fd7868733924.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/moxavomiwanak.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/warerodixoneg.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/zafaronivaj/jomisezapigetuwaluj.pdfIn PDF document text
    • http://tuzuxutetug.atwebpages.com/keurig_model_k40_filter.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/beyond_enemy_lines_game.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/canine_guided_occlusion_in_orthodontics.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/49186103769.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/mobile_legends_arson_attack_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/93637905982.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_off0000ddd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD5 5264 bytes
SHA-256: cd9d94cb000d511397d39d732c8b43d51eba6738362170f91f5d3f759a9edf3d
font_01_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 9992 bytes
SHA-256: e23c139a29d69a3941e51cf11969adb7bf92fcf2d0e4e0d85c1d66c30708d951