Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2582310c57a88b4…

MALICIOUS

PDF

34.8 KB Created: 2020-08-22 04:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c12a95f1e9498bf19b00cb0615b39e62 SHA-1: 9dd6f809a7b29f05ae4c9e670295bba5d4763785 SHA-256: b2582310c57a88b42df6904328dcbb4e086589aa358bebc3f4330f4889942fac
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=moulin+rouge+2001+full+movie++free'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify, many of which are flagged as benign. The presence of a malicious redirector suggests an attempt to lead the user to a malicious site, likely for phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

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=moulin+rouge+2001+full+movie++free
    • http://gorub.sebogmbh.com/uploads/1/3/0/7/130776485/61c0b362.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mapiguwidekedod.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/51987629443.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/61074072107.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0899/files/gejoxofujupopituzo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/nejegaboremiberuvalawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2120/4631/files/virginia_vallejo_amando_a_pablo_odiando_a_escobar.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/51894082103.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1277/files/14909437244.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/tagevakimokire.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/87210951804.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/validity_test_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/72554967980.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_off000049c5.bin
4ac70efd75a1c0c196b6420a469f7298ff8c2405ced3db792d09a50d32c2b9da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49C5 5088 bytes
font_01_sfnt_off00005b23.bin
1a9de4e48367c7b51239ff5c9e1d65c4d16af54d76840d0c286d2f561e94d5a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B23 10364 bytes

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