Malicious PDF — malware analysis report

Static analysis result for SHA-256 564b29fd96cfafdf…

MALICIOUS

PDF

33.4 KB Created: 2020-08-24 08:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c102f3bbe098f8dc6ab14534003b9a03 SHA-1: 955b92b70adaa5730f05d552995d2ac7494209b1 SHA-256: 564b29fd96cfafdfd8884730413e4eda405e2c3608a3a5d57cc2000eaefe57ba
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=zumba+boogie+woogie+song'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external PDF links, including one hosted on cdn.shopify.com. The ML classifier strongly supports the malicious verdict. No scripts were extracted, and the document body is heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=zumba+boogie+woogie+song
    • http://files.anna4animals.net/uploads/1/3/1/3/131398010/gifekififu_nujibeneziba_xisad_pobuzuduvasi.pdf
    • http://susij.norfolkmedicalservices.com/uploads/1/3/0/7/130775164/togewadoj_pilapibetovusa_jigawopizusub.pdf
    • http://files.votechristmas.com/uploads/1/3/1/3/131384468/tanivipalorebavume.pdf
    • https://cdn.shopify.com/s/files/1/0429/9699/0105/files/68423707238.pdf
    • https://cdn.shopify.com/s/files/1/0444/2878/7878/files/maviredezogenowasepivona.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8182/files/languidez_que_significado_tiene.pdf
    • https://cdn.shopify.com/s/files/1/0463/0488/6941/files/71973981083.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/nuclear_throne_weapon_ids.pdf
    • https://cdn.shopify.com/s/files/1/0431/4493/7628/files/77186899030.pdf
    • https://cdn.shopify.com/s/files/1/0437/6910/2485/files/ashabi_uhud.pdf
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/26150728985.pdf
    • https://cdn.shopify.com/s/files/1/0432/8030/2238/files/59484040887.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/modele_attestation_employeur_assistant_maternelle.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_off000047e0.bin
ee0ef454594a40a304f2f4c00e14b88eaa8cc4ad01ac8f659cb8b8f74a24a46f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47E0 5068 bytes
font_01_sfnt_off00005924.bin
511513f29770d38d5c34efc381c98b6007d02f008b51fe2c33e8459de3b99668		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5924 9384 bytes

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