Malicious PDF — malware analysis report

Static analysis result for SHA-256 f36c258a0e89b070…

MALICIOUS

PDF

55.9 KB Created: 2020-09-06 07:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f11ca7661aa7cba020248e9758c2a10 SHA-1: 4961464437573958c27bd7145140481a5e0d70a9 SHA-256: f36c258a0e89b070c08c0b8386d750d9bde6d4ff92ad953dac9b3afb08448d66
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=business+strategy+game+answers'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'Business strategy game answers' and the malicious URL, suggesting a social engineering lure to drive users to malicious infrastructure.

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/wix?keyword=business+strategy+game+answers
    • https://cdn.shopify.com/s/files/1/0437/5353/7685/files/ansys_mechanical_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/xojudapexamovexigurujud.pdf
    • https://cdn.shopify.com/s/files/1/0436/1263/5298/files/zitosoluxetuzeroro.pdf
    • https://cdn.shopify.com/s/files/1/0440/6909/3541/files/ruluzofuzobitizafanezu.pdf
    • https://cdn.shopify.com/s/files/1/0450/4292/5726/files/gram_negative_antibiotics_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/59361551709.pdf
    • https://cdn.shopify.com/s/files/1/0437/6202/4605/files/functional_genomic_landscape_of_acute_myeloid_leukaemia.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7732/files/learning_pronunciation_of_english_words.pdf
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/chakravyuha_songs_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8884/6753/files/xogoratawab.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/63447560674.pdf
    • https://static.usrfiles.com/ugd/ccb1c6_d63ddea6db6a44dca7c2985b6949385c.pdf
    • https://static.usrfiles.com/ugd/70a38d_da4253a16a73413496c37a0fb002d11d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6e2d46d0e454a4c8ba63f7b806c40a2.pdf
    • https://static.usrfiles.com/ugd/f59309_4022497be4a04adc84c4c3e554450a2a.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/
    • https://cdn.shopify.com/s/files/1/0436/1263/5298/files/zi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d41.bin
afedf75dede8a5a6acc265dd12ffdf19ce2bca88ce60d5e7b3aa0ddd727b3962
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D41 5216 bytes
font_01_sfnt_off0000af02.bin
49e0eb3426238e3aaa89f11c02b0dea4b23d82e89d66e443c36d14522dc2fa12
pdf-font-stream PDF embedded font (sfnt) at offset 0xAF02 10312 bytes