Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ecf2b23d6adc64…

MALICIOUS

PDF

42.4 KB Created: 2020-08-19 06:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fac45b75f79530183430dc3157fb7c4 SHA-1: 7ceeb10fe89f75a17dbc3a47caf9e00470360efd SHA-256: 99ecf2b23d6adc6476c21138a6e447a1e4bfa70ceac30d85658864c90d49bf1d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=anyplace+control+free'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting the document is part of a larger SEO poisoning effort to drive traffic to various PDF files, many hosted on Shopify. No scripts were extracted from this sample.

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=anyplace+control+free
    • http://files.ihscco.org/uploads/1/3/1/3/131383661/3f3858.pdf
    • http://files.1drop2creativeart.com/uploads/1/3/2/6/132695568/4389517.pdf
    • https://cdn.shopify.com/s/files/1/0432/6483/5737/files/92726452167.pdf
    • https://cdn.shopify.com/s/files/1/0445/7952/0676/files/death_saving_throw_5e.pdf
    • https://cdn.shopify.com/s/files/1/0435/0800/7064/files/nazofokaji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93515438816.pdf
    • https://cdn.shopify.com/s/files/1/0432/9478/5704/files/group_representation_theory_for_physicists.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/botabivupoxel.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/dewiji.pdf
    • https://cdn.shopify.com/s/files/1/0452/3678/1216/files/sowotorideronaxuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/convert_to_jpg_online_100_kb.pdf
    • https://cdn.shopify.com/s/files/1/0437/7100/3031/files/nogagiwufebokawezivobunog.pdf
    • https://cdn.shopify.com/s/files/1/0437/8876/3298/files/astronomy_olympiad_book.pdf
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/apache_tomcat_for_ubuntu_64_bit.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_off000068e0.bin
98fb8e600c57e163de33bee90d8c1a9bde804b9e4acf19f28cbb4edb9956eb21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E0 4920 bytes
font_01_sfnt_off000079af.bin
ddd182b6190c6928a9e427e00dd3a2ebcafbb73cd55c3eb598f9e7948d9e1f3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79AF 10260 bytes

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