Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff656431155989f6…

MALICIOUS

PDF

54.8 KB Created: 2020-08-11 20:07:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4495abc3ee8f8355ce32b108b0dbb060 SHA-1: aa3af2c6f601544b2c2347b14a0baa5a8fe9c5d1 SHA-256: ff656431155989f6aea85bf88da3317f40c5b3da01086a22a0f0412f34c6c8f7
120 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, pointing to `https://ttraff.ru/pify?keyword=alice+miller+drama+of+the+gifted+child+pdf`. This URL is embedded within the document body, disguised as a search result for a specific PDF title. The document also contains a PDF link farm heuristic, indicating a large number of external links, many of which point to Shopify domains. The primary malicious IOC is the ttraff.ru redirector, which likely leads to further malicious content or phishing pages.

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=alice+miller+drama+of+the+gifted+child+pdf
    • http://files.thegivingvinethriftstore.com/uploads/1/3/1/3/131381109/xujakofojix-wisik-mafovoje.pdf
    • http://files.worldcordbloodday.org/uploads/1/3/1/4/131408970/vutizivej-xininokuxo-luzanogema-vokupigunubes.pdf
    • http://banujopa.useddredge.net/uploads/1/3/1/1/131164110/mevuxemarepi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/8906714092.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/lebudikeserex.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/rivotezaxorizolurem.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/fudepedanekev.pdf
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/bestiario_de_arton_vol_2_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/kokikaxabagenotagow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0432/6686/7364/files/poultry_farming_books_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0439/8468/3166/files/raxuzavagix.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/19148430210.pdf
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/89188944042.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/83577373563.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_off0000998a.bin
34ed86016f4fb0fb406919b30383783bc08249c7de7228f184e5e8cf4fe56888		 pdf-font-stream PDF embedded font (sfnt) at offset 0x998A 5380 bytes
font_01_sfnt_off0000aba9.bin
6fdf7108626e3e939d636ece503af516b9ed1d4530749fa0e59dba265f67eae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABA9 10040 bytes

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