Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ce90a21a957ef7…

MALICIOUS

PDF

44.1 KB Created: 2020-08-23 19:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 886bd80a6da7c894f3281fc49aa95224 SHA-1: 336e5060b53ad88d445b71cb353d336016082d2c SHA-256: c8ce90a21a957ef7bf47eafa4fb9d008c3d52b9da91d8c749fb7e754cd5df9d1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=upload+live+streaming+video+from+android', suggesting a lure to a site that likely hosts malicious content or further redirects. The presence of numerous links, many hosted on 'cdn.shopify.com' and other domains, indicates a link farm designed to obscure the ultimate destination and potentially leverage SEO tactics for distribution.

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.ru/pify?keyword=upload+live+streaming+video+from+android
    • http://files.miwwi.us/uploads/1/3/1/3/131398145/nirisojikubufe.pdf
    • http://rotot.j2academy.com/uploads/1/3/1/4/131407736/vuzoriwozepo_gunadedevuvu_xukadegatiba.pdf
    • http://gapub.mrshawmusic.com/uploads/1/3/0/7/130740596/2332311.pdf
    • http://jadojiwer.genesislactation.com/uploads/1/3/0/9/130969634/6596780.pdf
    • http://files.thefishroomliberty.com/uploads/1/3/1/6/131637136/vukedigobade-vuviniwi-duwuzetibaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1796/9570/files/felitepu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/field_guide_to_american_houses.pdf
    • https://cdn.shopify.com/s/files/1/0436/4884/3929/files/bakra_eid_mubarak_images.pdf
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/39863069927.pdf
    • https://cdn.shopify.com/s/files/1/0431/7000/5156/files/dreamed_a_dream_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/87383514051.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/nuzamilosebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2866/7816/files/wedding_invitation_cards_templates_word.pdf
    • https://cdn.shopify.com/s/files/1/0432/7679/6057/files/sujuwebopelalibotudu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/35247488364.pdf
    • https://cdn.shopify.com/s/files/1/0433/7061/0851/files/best_website_builder_software.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_off00006e18.bin
a1511099affa3732e5cf710361c3d838280379dd0da269ec8d9a29b374edded4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E18 5412 bytes
font_01_sfnt_off00008074.bin
701629b9b07328c7c9d799cefeec0857a3065991e0ae1eca6221bf45ec90fb11
pdf-font-stream PDF embedded font (sfnt) at offset 0x8074 10240 bytes