Malicious PDF — malware analysis report

Static analysis result for SHA-256 e858abde475282b3…

MALICIOUS

PDF

72.1 KB Created: 2021-02-08 00:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 417429cdd8b3d9b31f933162bb9c6f32 SHA-1: 517563f3105198d79bd5ce6deaa17b3ebab327e9 SHA-256: e858abde475282b3fc29644e58dbefe35c2cd1cbb98d34857a63bd4dface4e68
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/aws?utm_term=business+model+generation+pdf+arabic PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475380/normal_5fd3a20ddfd7f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444646/normal_5fe51afb32356.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452837/normal_5feb161c5714b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_5fd99a0c3f329.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489411/normal_5fc6d45beb18b.pdfIn PDF document text
    • https://vakogiguwowokel.weebly.com/uploads/1/3/0/7/130775334/xonupajef-gitobebavaxisi.pdfIn PDF document text
    • http://bubuwem.iblogger.org/bomejomoregutadiloduw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445892/normal_5fdebd4f19832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fec7a4d705e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425916/normal_600ffd0813a42.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/bubisifapagefe/27665311916.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/cbse_improvement_exam_online_application_form.pdfIn PDF document text
    • http://gigivixegaxun.epizy.com/yooka_laylee_impossible_lair_achievement_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/starbucks_sugar_free_caramel_syrup_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/xowepul.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_off0000dee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE7 5664 bytes
SHA-256: 844f11681951d74c11c57c9565e36669222a9c593ba5834426db334a4494a21f
font_01_sfnt_off0000f210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF210 9808 bytes
SHA-256: 8cc7bf30f92f56e1ea0130f0be55be7d17bc174608943717a8b3fd132e2697a9