Malicious PDF — malware analysis report

Static analysis result for SHA-256 415b8a702459bbe7…

MALICIOUS

PDF

66.8 KB Created: 2020-08-15 02:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a16441a8144b2b264194969511eeb53 SHA-1: cfde0bc413396d9455546b9ec9509528ffb9ccbc SHA-256: 415b8a702459bbe72280639f9be0232a80b9d90524ce86d9daba5530b8ab6aa7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous links, with a critical heuristic firing indicating it's a malicious redirector. One prominent link, 'https://ttraff.ru/pify?keyword=criminal+justice+reform+bill+ny', is presented within the document body, masquerading as information about a bill. This link is designed to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. The presence of a large number of external links also suggests a link farm or SEO poisoning tactic.

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.ru/pify?keyword=criminal+justice+reform+bill+ny
    • http://files.promanchesterdigitalmarketing.co.uk/uploads/1/3/1/4/131437308/dd5b2c.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/merge_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/0206/8131/files/algebra_1_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/0712/3357/files/zubofotisusumeme.pdf
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/83685559511.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/europe_detailed_map.pdf
    • https://cdn.shopify.com/s/files/1/0445/3213/8143/files/basic_computer_engineering_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2054/files/chinese_link_level_1_part_1.pdf
    • https://cdn.shopify.com/s/files/1/0446/1009/3219/files/toyota_tacoma_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/pujonadorejedejelelugi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3653/3151/files/36502220034.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/26700051137.pdf
    • https://cdn.shopify.com/s/files/1/0431/7816/4384/files/dopimuxuniveduw.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_off0000b9f8.bin
c82aab327ad39bdde5d11eec366281fe7ac616db48ab3c59d52ac855ba12935c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F8 5248 bytes
font_01_sfnt_off0000cbbb.bin
a8be69bda53a781bda2097e6a145270ec81f49cf38d524490f59332a49d768df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBB 10612 bytes
font_02_sfnt_off0000efe2.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE2 4324 bytes

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