Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa9cb8a21aa9ace…

MALICIOUS

PDF

48.9 KB Created: 2020-08-25 03:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c4f4e37f577b06e6f2b59b88621bc81 SHA-1: 77b69929592eff957da658646d38eda628ae1014 SHA-256: 7fa9cb8a21aa9acec8b2ffc201106ec578c04239411e63b8853dff570d34dc0c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=space+jam+2+full+movie'. This URL is likely part of a phishing or malware distribution chain. The document also contains a large number of embedded links, many hosted on Shopify, which is flagged as a PDF link farm. The ML classifier also strongly indicated maliciousness.

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=space+jam+2+full+movie
    • http://tebivi.hayfieldsecondarychoirs.com/uploads/1/3/0/7/130775506/38c26b27d1.pdf
    • http://files.sampriti.us/uploads/1/3/1/8/131858975/xakasagaputun_webirupuwi_liwalamidoru.pdf
    • https://cdn.shopify.com/s/files/1/0434/6091/9462/files/96344439446.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/karakofebetuxew.pdf
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/21906826332.pdf
    • https://cdn.shopify.com/s/files/1/0437/3885/7623/files/rosetta_stone_english_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/believer_s_bible_commentary_william_macdonald.pdf
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/387060795.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/rezibajilebaxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7650/2175/files/vebimuza.pdf
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/16692990669.pdf
    • https://cdn.shopify.com/s/files/1/0436/9966/7099/files/zosuvarerejunin.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/pepedalodidarowaximugidel.pdf
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/ragesosujamer.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_off000080bb.bin
c8c1fd9995bf20fcea8ab1f90b7873d421964211f1edf97f9c41c8f101535b18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BB 5256 bytes
font_01_sfnt_off0000929b.bin
184dd22bd60dbf7fb07eed6d2ed60e04698f1e307354df4a1e5ebee2ca46f9fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x929B 10736 bytes

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