Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d32e8acb31868a…

MALICIOUS

PDF

61.8 KB Created: 2020-08-08 11:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5225d2dba903aecd59eb1822278219eb SHA-1: 6b7560169cedc56e70f03c3b19637d8c9bb62f3d SHA-256: b9d32e8acb31868a6ae66642e8eeb1646c27bd8be022756ae39b1302b98d9550
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=shareholder+activism+2020+pdf'. This indicates the document's primary purpose is to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to 'Shareholder activism 2020 pdf', suggesting a lure to disguise the malicious intent. The presence of numerous external PDF links, many hosted on Shopify, further supports the SEO link farm heuristic, indicating an attempt to distribute malicious content broadly.

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=shareholder+activism+2020+pdf
    • http://files.patricedworkin.com/uploads/1/3/2/7/132712093/5523226.pdf
    • http://files.oaasis.info/uploads/1/3/1/4/131408029/9656625.pdf
    • http://files.empirethebook.com/uploads/1/3/0/9/130969580/3945626.pdf
    • https://cdn.shopify.com/s/files/1/0435/8343/9003/files/13345668162.pdf
    • https://cdn.shopify.com/s/files/1/0439/2232/5672/files/adjectives_adverbs_comparative_superlative_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1297/files/armeria_alvarez_catalogo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3567/2219/files/vapeborumid.pdf
    • https://cdn.shopify.com/s/files/1/0447/9113/6422/files/bar_bending_machine_specifications.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/2008_honda_accord_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/1000_largest_cities_in_the_us.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2198/files/56170701877.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44758106853.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/dosoriputu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/sixumupemikesa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/zaxigix.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_off0000b2f7.bin
30fcb13ae9ed114b40f4f1a64c0297eea601af0f2eaec7ea21a4369c86b0c1df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F7 5832 bytes
font_01_sfnt_off0000c6ac.bin
3c95df56cf9704f9073dc33618405784b0c5b169b760fc44bf2c0ce5ca41542d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AC 10536 bytes

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