Malicious PDF — malware analysis report

Static analysis result for SHA-256 480117e6654802fa…

MALICIOUS

PDF

58.9 KB Created: 2020-08-15 02:14:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab0482afcc1ea03370edb53db9dcc77c SHA-1: 59449ad2fda9fcde0ca1b04f5b6eb447c0b34e78 SHA-256: 480117e6654802fa3853e02a6052289372a22ad2e911d7abc28483d0142ce3be
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded links, including one to 'ttraff.cc', suggest an attempt to redirect users to potentially harmful content. The ML classifier also strongly indicated maliciousness. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is driven by the embedded links.

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=spider-+man+spider-+man+cartoon
    • http://files.wallabymommy.com/uploads/1/3/1/6/131637226/vupewufelizinu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/37628148290.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/convert_to_csv_file_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/vuripolaxifugifusopid.pdf
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/mixipiworavebez.pdf
    • https://cdn.shopify.com/s/files/1/0435/0260/0356/files/36956505221.pdf
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/95341651436.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/agricultural_engineering_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/87625098680.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/80305753115.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/74166044938.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/bb_racing_mod_apk_rexdl.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_off0000a928.bin
d143b0cad32561439e061f27f983cbaed359452696718484fcf095273a962508		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA928 5324 bytes
font_01_sfnt_off0000bb26.bin
374ea0777eaa2f85afc69d75a8f4a9e546841be974f3c13acaacc0615840fb3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB26 10560 bytes

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