Malicious PDF — malware analysis report

Static analysis result for SHA-256 48bd7f4b60719b56…

MALICIOUS

PDF

44.9 KB Created: 2020-09-03 00:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0273b5ea31ab89c62e4bcfe7fa8111c SHA-1: e6d133ac4b332fb36cc6d33bab1c31ba753b5091 SHA-256: 48bd7f4b60719b56dd8d311f8b0a109cac98e661ecae31c52c15d4e18b13e0ec
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a PDF link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'anniversary quotes images free' and the malicious URL. The presence of a link farm suggests an attempt to drive traffic to malicious infrastructure, potentially for phishing or malware distribution.

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.com/wix?keyword=anniversary+quotes+images+free
    • https://cdn.shopify.com/s/files/1/0443/8438/7238/files/diferenca_entre_texto_expositivo_explicativo_e_argumentativo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0869/5200/files/jeferubikerefo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1966/3517/files/aday_retmen_snav_kitab.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/warokezisezesa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/jurnal_carica_papaya.pdf
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/76612872407.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/tvs_lp_46_barcode_printer.pdf
    • https://cdn.shopify.com/s/files/1/0463/3133/0721/files/advaita_bodha_dipika_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0464/5044/2408/files/newupudetoxoletu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/dark_souls_2_cheat_engine.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_off0000704c.bin
0532299d4a58793be485daad72765395915cf7dea428ea93acdbc615b535b397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704C 5332 bytes
font_01_sfnt_off0000826a.bin
e740bf882d0f57bdda80a50525f7c9d7898cdaabef355e602e1c9d1b2f856939		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826A 10616 bytes

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