Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff8d1f4313d53c2…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 21:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f536b349ba360369c70c12ac067fc55 SHA-1: c50f4ee9efc5daeb05f26cb67f82fe8c91b7f31e SHA-256: 4ff8d1f4313d53c272ea42e1c6e0db9f01deec03eafe8a981cd654b39bc67190
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=assamese+film+pagli+full+movie`. This link is presented within the document body, disguised as a search result for a movie. The PDF also contains a large number of external links, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning tactic to distribute malicious content. 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.cc/pify?keyword=assamese+film+pagli+full+movie
    • http://files.dennisglover.net/uploads/1/3/1/4/131483317/40d649.pdf
    • https://cdn.shopify.com/s/files/1/0433/0396/0731/files/javascript_array_intersection.pdf
    • https://cdn.shopify.com/s/files/1/0446/0858/5891/files/how_to_know_higher_worlds.pdf
    • https://cdn.shopify.com/s/files/1/0440/9150/6840/files/vediriwever.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/5572134750.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/25476742970.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/19872928050.pdf
    • https://cdn.shopify.com/s/files/1/0449/4236/0744/files/apnea_obstructiva_del_sueo_medigraphic.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/82503956738.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9560/files/allen_bradley_rslogix_5000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/9486/6088/files/17553021195.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/jesefagaxifov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c0e.bin
0444b56c8bd4b7893f4b03de6eebd35e9a21b578b0e7f63b074d46cf0212acdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C0E 5176 bytes
font_01_sfnt_off00005da2.bin
ce1763e74b3e568b5890791fd3f59518553565a9779dbfaa16b1da15ea665ffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA2 4376 bytes
font_02_sfnt_off00006ba8.bin
6295a899bdc9cb4cae7f51e94403771fd93a6c34e39b38d5fd2abb71641e5441		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA8 10048 bytes

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