Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ef118a41fb3668…

MALICIOUS

PDF

78.1 KB Created: 2020-12-28 06:02:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ae2fba37ef2e5caa63213dd9a9babf11 SHA-1: 813e58db059ea955d49c13af66cba7d58f3a99fc SHA-256: f6ef118a41fb3668c8da4fd4848deb62f232bfd4f1ff7ac85b78f62de00ceaf8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic and ClamAV detection. The document body, though heavily obfuscated, suggests a lure related to 'Sky sports stream app android', likely a phishing attempt to trick users into downloading malware or visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gettraff.ru/aws?utm_term=sky+sports+stream+app+android In PDF document text
    • https://cdn.sqhk.co/reserujaj/bPhbift/79206798832.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/chcu8ig/wezoref.pdfIn PDF document text
    • https://cdn.sqhk.co/barugogip/iibq1hb/kuroliv.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/zgjgvhi/unicorn_bike_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496372/normal_5fe8b469ee299.pdfIn PDF document text
    • https://cdn.sqhk.co/totuzilexif/b9Pibfj/351414051.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/phatjap/thursday_night_pro_football_game_tonight.pdfIn PDF document text
    • https://cdn.sqhk.co/vivutazawi/VtCiOcs/kitizixipedenar.pdfIn PDF document text
    • https://cdn.sqhk.co/vegubefeno/hjibUjG/sakasozasofudixigonemi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475217/normal_5fe91ea4d27a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/21d5951b-2dd9-4a33-9e5e-cfef06200c18/percy_jackson_the_ultimate_guide_dow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d2ad137-5490-4b16-be54-74e25fa26d4a/biological_molecules_worksheet_answer_key_pogil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6af63bda-1529-43ae-ac15-d4536fc6f3f5/watson_glaser_test_wikipedia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1e2d1ca-0db1-432a-8b9e-2ea8cdce4811/xumaxeno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d809a3-c2ca-49c9-8674-b8ba578806d8/dovekesaxaxubupokix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0397a676-2754-4446-8f49-3ad11c40402e/translate_latvian_to_english.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_off0000f528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF528 5344 bytes
SHA-256: d3d9f55fa04d9f9aae176df62e85deb15dee03bab151bdf3a30468afd0bc1d18
font_01_sfnt_off00010747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10747 10708 bytes
SHA-256: 8bfbd77c0b59f6116cd1edbdf7108e290bfea443ed2d8b1677b1eb6ce7c668ce

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