Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc6c2ccb6051a71e…

MALICIOUS

PDF

49.9 KB Created: 2020-08-06 23:06:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6d66baf20c571080dd03f9be00b63d7 SHA-1: 9ec6d0234ec88acb15ce08e7f3d874cfbd0113f9 SHA-256: fc6c2ccb6051a71e4e2a193dc318debae69926949d21d49791d89c69824afb64
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector. The primary attack pattern involves luring users to click on these links, which likely lead to further malicious content.

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.cc/pify?keyword=anthropology+optional+test+series+pdf
    • http://files.remembermegenealogy.com/uploads/1/3/1/3/131384127/3085604.pdf
    • http://files.jurongdistrict22.com/uploads/1/3/0/7/130738596/2972831.pdf
    • http://files.graceandtaylor.com.au/uploads/1/3/0/7/130739504/xopetul_zenerofo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/tujexufaxu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0624/5539/files/3790933045.pdf
    • https://cdn.shopify.com/s/files/1/0435/9290/8963/files/zokumew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/tefusebidopifodal.pdf
    • https://cdn.shopify.com/s/files/1/0448/4051/7792/files/chalean_extreme_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/83605973709.pdf
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/black_ops_2_steam_key_generator.pdf
    • https://cdn.shopify.com/s/files/1/0433/4623/1449/files/aumentativos_y_diminutivos.pdf
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/todisulopobuzanaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/8797194840.pdf
    • https://cdn.shopify.com/s/files/1/0434/7140/5222/files/certificato_medico_anamnestico_patente.pdf
    • https://cdn.shopify.com/s/files/1/0431/5788/0996/files/advanced_financial_accounting_11th_edition_solutions.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_off00007ad8.bin
745814a4953323fb86a23fe7e9b8d80cef718cf585f7081374e6f202cbdf59cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD8 5396 bytes
font_01_sfnt_off00008d36.bin
9d91674f918b8010881abc270047f618bd03e5d3cbe1c68547d8741e032b3f8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D36 14516 bytes

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