Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e182a410baa8e8…

MALICIOUS

PDF

60.2 KB Created: 2020-11-11 07:44:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9ec0b3d81b5a54deba32364237491429 SHA-1: 48c098c0ea70860af5cb840b388d171a970644a3 SHA-256: 80e182a410baa8e8352ebdee194f048fbaa8c2b8b1718f30d8166271e626ae04
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/strik?keyword=element+challenge+puzzle+answer+key+2002 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5fa399bc702ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f9c8e2698dcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5f94f6cc535a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387567/normal_5f93ba16b5c86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f87efda80037.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420037/normal_5f9e2774b0d63.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/fejenijovekozu/fimajovixegifasibefaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf9b2f22-af87-4728-ba8c-21f585f8ff95/compressible_fluid_flow_oosthuizen_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b008f988-d5e8-442b-a924-4e79bf055fd2/logupipe.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/lojog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3387b44f-a9ba-4cc8-956d-49b6119a5567/66119239237.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/pencil_calligraphy_worksheets_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66f15575-312c-4580-a2ea-6494a6b21bfb/macbook_pro_fan_loud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60b5f766-fad0-409b-8178-228393d8de35/bojisewavazobenatexijotam.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/does_costco_carry_walk-in_tubs.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_off0000af7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF7B 5884 bytes
SHA-256: e4625bf647809e2c33c568d956e72b12c4d4b916045278013317b825e51d3458
font_01_sfnt_off0000c380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC380 9532 bytes
SHA-256: 2ef4fc539c8fbc4f8522cb0420591314df1c807e4c8c207c553b617b2e208bc1