Malicious PDF — malware analysis report

Static analysis result for SHA-256 14909b58f7b62e14…

MALICIOUS

PDF

82.2 KB Created: 2021-03-16 03:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 68a2ca356137fb20740c5014d1ea6a77 SHA-1: 2630d203ae71045eaff38da8511d8724f4bd6f41 SHA-256: 14909b58f7b62e14b015c455879ffb0daf12e1becfa4b9166664c31a9381e5ee
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs that point to known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of malicious URLs suggests the document's purpose is to lure users to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://crophysi.ru/strik?utm_term=what+is+thermal+energy+easy+definition In PDF document text
    • http://lavkavkusa.store/what_is_a_metaphor_and_simile_and_an_examplewar57.pdfIn PDF document text
    • http://drovazvenigorod.ru/power_of_now_audiobook_youtubef5w7o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495254/normal_5feb4bde7cd9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448538/normal_603799ec4c0cc.pdfIn PDF document text
    • http://carinsrates.com/equivalent_ratios_practice_worksheet4gd4v.pdfIn PDF document text
    • http://ar-foto.art/xafewepobimidakokogoliz3s46g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376354/normal_5ffde41d6aadb.pdfIn PDF document text
    • https://cdn.sqhk.co/noxisoture/jqjhohc/34546975060.pdfIn PDF document text
    • http://shtangye.xyz/kaxiboroguwonuwirilof6k36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_60329433b8b6e.pdfIn PDF document text
    • http://tiktoktop.design/donekogif3s18z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458633/normal_60137f6ded6be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459641/normal_5ff9d658f2f8c.pdfIn PDF document text
    • http://test123test.xyz/how_to_use_an_embroidery_machine_for_beginners59ony.pdfIn PDF document text
    • http://uniques.space/nofarurogubudet8mh.pdfIn PDF document text
    • https://cdn.sqhk.co/zaweniwefi/f9jaxje/49962104192.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/jobavo/45660173663.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/mevikilovafufinak.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/57152087028.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/appium_server_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/funejazegotubujeke.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_off0001040e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1040E 5436 bytes
SHA-256: 5e3b788309ccc7842a921e7224b60fd84b9d74d041b6ad806a42c69442b76706
font_01_sfnt_off00011671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11671 10892 bytes
SHA-256: 82d4d654fd4d50aede0a6b45a276d8aa05c6d9fa9b48ea5ef94622cf215a4c5b

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