Malicious PDF — malware analysis report

Static analysis result for SHA-256 849e630db1496ddc…

MALICIOUS

PDF

44.0 KB Created: 2020-10-10 08:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d6319633b091062ad8f7c3922af0c8f SHA-1: 50ca6b4293e33f34eebdd2fc357a001e4c5f7371 SHA-256: 849e630db1496ddc81f0ce538d9ea55f1aea0178a67a16b9dba0d928dd033324
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ggtraff.ru/strik?keyword=most+famous+plagiarists', which is flagged as malicious. This suggests the document's primary purpose is to redirect users to a harmful site, likely for further exploitation or phishing.

Heuristics 3

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?keyword=most+famous+plagiarists
    • https://site-1038944.mozfiles.com/files/1038944/67900885800.pdf
    • https://site-1037079.mozfiles.com/files/1037079/xozuti.pdf
    • https://site-1036743.mozfiles.com/files/1036743/46691719435.pdf
    • https://site-1038575.mozfiles.com/files/1038575/purez.pdf
    • https://site-1037138.mozfiles.com/files/1037138/44170425331.pdf
    • http://files.ccs-foundation.org/uploads/1/3/0/7/130740551/3c82386ed3.pdf
    • http://files.resolve-counselling.org/uploads/1/3/2/6/132695546/funufar.pdf
    • http://metogox.technowledge.com/uploads/1/3/1/3/131398252/zudititosive_jogeda_rawoxevejufegu.pdf
    • http://files.janesboypress.com/uploads/1/3/0/8/130874580/wesozegofenupil.pdf
    • http://files.sunnydaybistro.com/uploads/1/3/1/3/131381225/pejejumopetube-gadijikigefoxod-gogewawi-welokiwatorosol.pdf
    • https://cdn.shopify.com/s/files/1/0266/8979/8317/files/if_i_was_you_id_wanna_be_me_too.pdf
    • https://cdn.shopify.com/s/files/1/0492/3018/4601/files/nojujuma.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/windshield_survey_nursing_paper_example.pdf
    • https://cdn.shopify.com/s/files/1/0462/2765/2759/files/green_tea_fat_burner_costco.pdf
    • https://cdn.shopify.com/s/files/1/0435/4467/4455/files/file_system_error.pdf
    • https://cdn.shopify.com/s/files/1/0432/6214/8763/files/valazujigapunogiliva.pdf
    • https://cdn.shopify.com/s/files/1/0481/3484/8675/files/manual_gps_trimble_ez_guide_500.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3785/files/google_docs_harry_potter_and_the_sorcerers_stone.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8837/files/tipos_de_lenguas_en_el_mundo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006eab.bin
728d90ad44ea60d8a9a81f383840eaafd7133c6997837f3f8ac7eb66087c9493
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAB 5228 bytes
font_01_sfnt_off00008069.bin
7ff3dab0440b51439b430df1e4d378f77a8b94e6d50b8b95f75e6e0aebfe5c6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8069 10120 bytes