Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a52f4a1f1f0075…

MALICIOUS

PDF

40.0 KB Created: 2020-08-11 22:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f47c2bd435ef1d677e4ae179c42c9ee SHA-1: 50b6ddba56732e139e7b777deee88b4293d716a0 SHA-256: 40a52f4a1f1f00751c389bb3ae75e738d6ab5826c1eabbf253270d05814c1749
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=fire+alarm+detector+types+pdf'. This indicates a phishing attempt where the document body text, though partially corrupted, likely serves as a lure. The file also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is the redirector, which likely leads to a further malicious destination.

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=fire+alarm+detector+types+pdf
    • http://files.calgarycigars.com/uploads/1/3/0/9/130969509/zazovovuso.pdf
    • http://jemuwa.alessandrabaccilliere.com/uploads/1/3/2/6/132695569/5382702.pdf
    • http://moraroke.mommapicecream.com/uploads/1/3/1/0/131071041/213864.pdf
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/install_wine_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/danedujibokakof.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/guzipizoleni.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/neopets_user_lookups.pdf
    • https://cdn.shopify.com/s/files/1/0429/2729/2582/files/29677904116.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0445/files/uce_chemistry_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9290/2037/files/16819210625.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/69118776331.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/80364452484.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_off00005e22.bin
5d6e91aeeb74242bf65718f838fa3b5266c818da935856c03c8157ed21776020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E22 5360 bytes
font_01_sfnt_off0000704b.bin
a68dd528fc46767f892aa28f10f26a3a659e14f9d2e77cb26d5468629560e8d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704B 10272 bytes

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