Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab468ef4f50e1f3…

MALICIOUS

PDF

67.5 KB Created: 2021-01-08 16:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 34c55aa79376b8a656c621616ff7be7f SHA-1: ee21c90b10d4904946e0aa8cfe52c8a657eafbe2 SHA-256: aab468ef4f50e1f35059761e9cc4e2ae53f2e70ab9bad7891a6a7926012a0308
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, 'https://traffine.ru/aws?utm_term=caller+tune+song++djpunjab', is the primary indicator of malicious intent, likely serving as a lure 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://traffine.ru/aws?utm_term=caller+tune+song++djpunjab In PDF document text
    • https://cdn-cms.f-static.net/uploads/4464873/normal_5fc24b87ee8fd.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/2pabvo0/67318138347.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/6hiVifJ/simple_vegan_gingerbread_cookies.pdfIn PDF document text
    • https://cdn.sqhk.co/gidufulelav/egejgji/nesigotivudanevuzepi.pdfIn PDF document text
    • https://cdn.sqhk.co/febutatesu/vqqthiJ/stupid_zombies_3_hacked_apk_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/event_planning_website_template_wordpress.pdfIn PDF document text
    • https://s3.amazonaws.com/getizar/zezubipoxisaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/567e810b-2e2c-4458-a5eb-6021043b2ac3/kodaxinowukuvutew.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/ap_biology_cladogram_worksheet_key.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/conceptual_physics_answers_chapter_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b3da70e-9f68-49f4-9fce-32f92ef24c70/craig_mecanica_dos_solos_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3be5572f-b0a3-4656-ab6e-ef6230964e6b/dufufu.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_off0000bc1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC1A 5248 bytes
SHA-256: 060c50c0576a81e8fd927d07ec5ed98afd06521f2304b4300b6dd6c1bb391c12
font_01_sfnt_off0000cdf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF7 9976 bytes
SHA-256: 2dd500b9d51b2795798b212cf646761e807b06b975b3afaa4c9910e5bc2d9a94
font_02_sfnt_off0000f06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06A 4640 bytes
SHA-256: 7ceca69426cec7d49520c2dfb4def816e748a55002afd8b368d737cc1df0101b

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