Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d65a8f02839dda…

MALICIOUS

PDF

42.9 KB Created: 2020-08-23 08:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a80fe698e38069e0aa42143994573c8f SHA-1: 6711d540f6765b0d67e26e09dca36c1755f59500 SHA-256: d6d65a8f02839dda30a3017a3df827c8a7d8423d1bede2e951123202ffbfa1ea
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains a URL that appears to be the same redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cracking+the+freemasons+code+pdf
    • http://xefukik.bea-cambodia.org/uploads/1/3/1/8/131871921/safixixilaraduz.pdf
    • http://files.henandchickdolls.com/uploads/1/3/1/4/131438068/d6606997.pdf
    • http://faxud.istanbulsanatlayasam.org/uploads/1/3/1/4/131454215/855119.pdf
    • http://files.emagboosters.com/uploads/1/3/1/3/131398367/0a1d8f13.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6165/files/kirejuregufabemavewekos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/bhavans_college_merit_list_2019.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29883534071.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/67317862861.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/taxubofuvi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/40326479136.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/76644171181.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/34385213883.pdf
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/article_grammar_rules.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/200_business_ideas_in_kenya.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/wakemezavaxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/44450027494.pdf
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/although_even_though_however.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_off000069bf.bin
50d53e8501ecf2c2f527bf0f8ddfc8f2f2c1e41faf5f9a11c54c8faac3d0d778		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BF 5508 bytes
font_01_sfnt_off00007c49.bin
9c35404d20f507f55be8340ccca9a6eb4103ee6e08fc40f684b49cc7b75675b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C49 10056 bytes

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