Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf83b953ecc9cbe…

MALICIOUS

PDF

38.5 KB Created: 2020-08-22 15:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 967684b20320aaf4522016ace3e69f72 SHA-1: 4453eac8aa9b975a6877fd0eb0038911c78e07a5 SHA-256: 3cf83b953ecc9cbedefe90c290d19871af7e52060d56e0d7a5ed63ba9af2e889
120 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.cc/pify?keyword=mtg+physics+today+august+2018+pdf'. This indicates a social engineering attempt to trick users into visiting a malicious site. The document also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. While some Shopify links are benign, the primary redirector is the main threat.

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.cc/pify?keyword=mtg+physics+today+august+2018+pdf
    • http://files.ccwestlibrary.com/uploads/1/3/1/4/131406181/napuze.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/lisukuvasud.pdf
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/thyristor_application_circuits.pdf
    • https://cdn.shopify.com/s/files/1/0438/2759/3376/files/plastic_deformation_fracture_icd_10.pdf
    • https://cdn.shopify.com/s/files/1/0435/8645/3663/files/javemizusanusuvajebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/hernando_county_school_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/vakamikejugawujo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/assistant_chef_de_projet_informatique.pdf
    • https://cdn.shopify.com/s/files/1/0434/7471/4790/files/amman_songs_tamil_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/wallpaper_cartoon_wale.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/architecting_for_scale_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/ffmpeg_install_mac.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_off0000547e.bin
f89fda8a8f204e93975fbed4c9c22fb657671e1d579ad32a73d2de4ce4b21794		 pdf-font-stream PDF embedded font (sfnt) at offset 0x547E 5916 bytes
font_01_sfnt_off000068b9.bin
61b19f29c44727fa14313178d60a901b6bfe4be97f449a9a0ad68497bd0fbe5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68B9 10752 bytes

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