Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8a1c11091dae59…

MALICIOUS

PDF

40.4 KB Created: 2020-08-01 17:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b25776fe00b2a2a4bd00967431bcd4d SHA-1: a106d29f23cbf4f53ce20baf2a09d2671e1a7bf0 SHA-256: ee8a1c11091dae59bbcff843aea585d32a99944392622c141aa18e45c7e3737c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and a benign-looking URL, suggesting a lure to download or visit a malicious site. The primary intent appears to be redirecting the user 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.ru/pify?keyword=wma+to+mp3
    • http://files.martino1photo.com/uploads/1/3/0/8/130813317/bakizikebejusev-kilel-revopubapiki.pdf
    • http://files.rockinrobinonthegreen.co.uk/uploads/1/3/2/8/132816066/zomewefokowesaxap.pdf
    • http://files.whippoorwillwoods-raynham.com/uploads/1/3/0/7/130776499/b9d43.pdf
    • https://cdn.shopify.com/s/files/1/0430/5754/5365/files/dagomakanigapo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/32824067844.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/kefurufojozanujukateg.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/robipegegujozibutawor.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/nugusopapek.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/dunuboxozikepipa.pdf
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/womajawudikudevosu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31931154882.pdf
    • https://cdn.shopify.com/s/files/1/0427/6781/0726/files/kosutorebi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7239/6193/files/jawemovolepiwaxaxuravike.pdf
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/1418390379.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2328/5928/files/pevesunuvugenegexun.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/93133507693.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_off00006255.bin
d31a20687bdaa46e98f32390dc9671af055102308cf93ecfc0cbee4e7228feb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6255 4836 bytes
font_01_sfnt_off000072ca.bin
af7a66129c758c6224215df105028fcb907f2af4a2a84cdbe68ca24b937cd649		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CA 10020 bytes

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