Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8ed5e29f7196e9…

MALICIOUS

PDF

76.0 KB Created: 2021-01-15 05:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ec0420082458b0ac82d23a9a39e5bbaf SHA-1: ceb200dd4c59f39fe97c4eea24434d4213a4d457 SHA-256: ad8ed5e29f7196e938413d1df725b371c11570001b262607208f86f8711a2a0b
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious redirector URL indicates an attempt to lure the user to a harmful site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/123?utm_term=dr.+seuss+poems+short In PDF document text
    • https://site-1176160.mozfiles.com/files/1176160/65310048090.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/BeLjbi4/maf_carrefour_online_shopping_app.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/ibYhcSe/roblox_ipo_price.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/Uz2ISWz/iphone_app_sound_spectrum_analyzer.pdfIn PDF document text
    • https://cdn.sqhk.co/wugotiparo/Mhhmii7/vilara.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/jIighje/hampton_lake_bluffton_south_carolina_real_estate.pdfIn PDF document text
    • https://site-1083884.mozfiles.com/files/1083884/turkish_to_english_conversation.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/hbvaBjc/76973001393.pdfIn PDF document text
    • https://cdn.sqhk.co/dawezizupata/6icbNjb/talking_pierre_the_parrot_apk.pdfIn PDF document text
    • https://site-1199436.mozfiles.com/files/1199436/kusutabipixezofum.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/icIhhhd/tenusozut.pdfIn PDF document text
    • https://site-1180799.mozfiles.com/files/1180799/23911394822.pdfIn PDF document text
    • https://site-1180908.mozfiles.com/files/1180908/90020508225.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/jijgZNZ/glass_breaker_game.pdfIn PDF document text
    • https://site-1167954.mozfiles.com/files/1167954/bujodolusozabu.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://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_off0000e0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D3 4576 bytes
SHA-256: 7d3ec15f881b07fe0240a146944eea6cc00c6faff1cdc6afc4f1faede70a2db3
font_01_sfnt_off0000f069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF069 10920 bytes
SHA-256: e755b8890df84069918c774912f0ce91cbdadc6d3482df6984ac1387124c60bf
font_02_sfnt_off0001152d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152D 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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