Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda3e0d5e2541be9…

MALICIOUS

PDF

42.7 KB Created: 2020-08-11 13:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 702220e1b58b714d4cf9c3aac7c2b471 SHA-1: 78dcfcb995aee03d1e5c8ad38d8763ad64a10249 SHA-256: cda3e0d5e2541be9ec38bfd473ae808b296dca8122431cd063547b2f4760f5f9
120 Risk Score

Malware Insights

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

The PDF contains a link farm with 16 external PDF links, including a redirector to ttraff.com. The document body text is heavily obfuscated but contains the URL "https://ttraff.com/pify?keyword=causes+of+hypertension+in+pregnancy+pdf", suggesting a lure to a malicious site. The presence of numerous PDF links indicates an attempt to manipulate search engine results or distribute content through a link farm. No scripts were extracted from this sample.

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://ttraff.com/pify?keyword=causes+of+hypertension+in+pregnancy+pdf
    • http://bulagov.mooserange.com/uploads/1/3/0/8/130814328/difidud.pdf
    • http://files.kyammo.com/uploads/1/3/0/7/130776599/bofajepivixakewip.pdf
    • http://files.key2evolve.com/uploads/1/3/0/8/130874318/zasabuxemer_xawapikiguromik_balasoge.pdf
    • http://files.rbvonline.com/uploads/1/3/0/8/130873738/levarok-fezalepaka-zipoluzuririred-wabib.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/hooked_on_a_feeling_original.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/31697485777.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/15529975591.pdf
    • https://cdn.shopify.com/s/files/1/0434/5302/2369/files/show_hidden_folders_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/dialectic_of_enlightenment_philosophical_fragments.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/ficus_bonsai_care.pdf
    • https://cdn.shopify.com/s/files/1/0428/8089/3084/files/78000729930.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5071/files/business_intelligence_and_data_analytics.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/fisiopatologia_de_neumonia_en_nios.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/48353060791.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/awaken_the_giant_within_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/25172665046.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_off000069b0.bin
a445a605b8bbb56ed004cca0920eba83c5709f7bcb4e3bfa2fa454cf0eaf2176
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B0 5392 bytes
font_01_sfnt_off00007c10.bin
af7cf14350cc2bb677ea4c04acc3c86c71999d74b8fccd3553bf74a82e1a6835
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C10 9924 bytes