Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b6cca4f52408458…

MALICIOUS

PDF

87.2 KB Created: 2021-05-04 03:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 9b93b49ecf4107cdf609e9d65b4b9b77 SHA-1: bb2ebd7ff9fd245645fa34e3b9ea03687d139f8e SHA-256: 0b6cca4f52408458c3c6d8f966a82f43dd04de2c696a74fc3fe3634cff081876
136 Risk Score

Malware Insights

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

This PDF document contains a lure related to employment and redirects to a URL that appears to be a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to lead the user to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://dugedepap.ru/strik?utm_term=apple+supply+chain+program+manager+salary PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486534/normal_5fe3c844a96f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418764/normal_60093b302ac7f.pdfIn PDF document text
    • http://tugidunamoz.22web.org/the_seven_deadly_sins_grand_cross_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414696/normal_5feb2044dcf46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450148/normal_5ffab29b87ad5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5ff9ad8447bfd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://roxifopovarag.rf.gd/central_florida_boy_scout_merit_badge_online.pdfIn PDF document text
    • http://pimibini.epizy.com/75178856911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff33b1e4-c3c3-4185-8996-8f83ecdc4241/free_willy_2_online_streaming.pdfIn PDF document text
    • https://f06ae689-34e6-4fd9-b749-a5985747e370.filesusr.com/ugd/4117a9_52f18a2ef93747f39cceca72688b61ee.pdf?index=trueIn PDF document text
    • http://zumaborelap.rf.gd/aikido_technique.pdfIn PDF document text
    • http://gikutixutawax.epizy.com/energia_eolica_en_el_mundo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8804b5af-d453-4ea5-8f5f-c25e8736055f/what_is_metaphor_with_5_examples.pdfIn PDF document text
    • https://19aaccd0-9772-41b6-85c4-be118606641a.filesusr.com/ugd/a12125_e5298c2a9f2b4c61b4c32178487527c1.pdf?index=trueIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_59d24224729a4239bb2ae521741e882d.pdf?index=trueIn PDF document text
    • http://juxuvirorut.epizy.com/7299724703.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f144311d-0207-4f09-bd34-2f52494f811f/how_to_win_pa_lottery_scratch_off.pdfIn PDF document text
    • https://4c5ad993-366d-4b3a-aa99-9b6f56583180.filesusr.com/ugd/01e791_3dc2f1c4b7354be18bcb8e63b0b0728c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2c5227f-8735-47e0-b2f1-c0124da52bf4/pedunafeliru.pdfIn PDF document text
    • http://xakafof.rf.gd/kojijalugoxowubumulo.pdfIn PDF document text
    • https://b6de9e3f-c562-4e05-b5ee-70895c8060ae.filesusr.com/ugd/3801ff_ac29e0841aa34b0e841fa79ca49907f2.pdf?index=trueIn PDF document text
    • https://c5c27394-2042-4749-9b39-d1c24dcbd9f0.filesusr.com/ugd/e9b987_a2ac299284984f55b0a3667b824734e2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/85a2760f-0956-4d77-9145-ca1f42dcb6cc/69605017660.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3D 5240 bytes
SHA-256: 2fd549237e5428c02af778e1243df3b415a4cdd1f9136c4ee532a3d6aabaed09
font_01_sfnt_off00011bdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BDB 10912 bytes
SHA-256: 3360bf90c031188e1ee1f6320e13ff2b1c69aca4341691084e983902f3daa50f
font_02_sfnt_off000140fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140FD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c