Malicious PDF — malware analysis report

Static analysis result for SHA-256 260323b5515c6c08…

MALICIOUS

PDF

61.1 KB Created: 2020-08-05 01:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4293d7f9d190f68464fb5d595982e1c0 SHA-1: 4461e46266e7446355ed9e6814a24c9c9b74fb44 SHA-256: 260323b5515c6c086d94615e47fbb3aa7ac6ad621c5360c5ed6319a1806cffd8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'English to tamil dictionary pdf online' and the URL 'https://ttraff.com/pify?keyword=english+to+tamil+dictionary+pdf+online', suggesting a lure. Additionally, a PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, with 'cdn.shopify.com' being a dominant host, further supporting a malicious distribution or phishing attempt.

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.com/pify?keyword=english+to+tamil+dictionary+pdf+online
    • http://files.hannahfairchild.com/uploads/1/3/1/4/131406365/7473160.pdf
    • http://files.davertskate.com/uploads/1/3/2/7/132740415/2706649.pdf
    • http://dimamufe.vathespian.org/uploads/1/3/1/8/131871699/namamawamogabafo.pdf
    • http://files.diain.co.uk/uploads/1/3/0/7/130775475/bamivopukugofod.pdf
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/discord_bot_specific_channel.pdf
    • https://cdn.shopify.com/s/files/1/0430/7786/1527/files/tepaner.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/fuluvemugiferisiloroxili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/tuwurigotizutafeju.pdf
    • https://cdn.shopify.com/s/files/1/0434/1592/8997/files/wunagilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/dezodewoxupogo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/lionel_richie_i_call_it_love.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/42914685410.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/zugaradeworu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/nupaseroveravoge.pdf
    • https://cdn.shopify.com/s/files/1/0434/0973/5845/files/rerepug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/kilugojuwasijovuvolebeti.pdf
    • https://cdn.shopify.com/s/files/1/0431/1518/4277/files/wajabanosojedukigekunad.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
stream_004_off00008acd.bin
4e8c74754e005cb71151b8ca8e152470f4670ba0c8b5500861e38e4137176174
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8ACD 21824 bytes
font_00_sfnt_off000077cb.bin
6338685fe41c514abf7de03802a7f5feed8f7b5b675f0c1150f1541b0f8d06ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x77CB 5628 bytes
font_02_sfnt_off0000b9d8.bin
97350f4b81e8daced200f2ab6fc505ebadf3438bc041589da6df40d8eaee57e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D8 14320 bytes