Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3fd8dcc41c0e164…

MALICIOUS

PDF

41.4 KB Created: 2020-08-21 01:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0d53acf1e6ec64d3a7ff910ca9fbc7c SHA-1: ccf3f9de7a73349a4e555c1e7f6d80904e18091c SHA-256: b3fd8dcc41c0e1644ce2c81856041dc2b0b7c807ee7ec34297faeff078d441b1
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=akkada+ikkada+rakta+charitra+video+song', is designed to redirect users to malicious infrastructure. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to shopify.com, likely to obscure the malicious redirector. The ML classifier strongly indicates 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=akkada+ikkada+rakta+charitra+video+song
    • http://files.joannaquinn.org/uploads/1/3/1/3/131383959/9491688.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/76021805482.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/65549553558.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/ravibepidalena.pdf
    • https://cdn.shopify.com/s/files/1/0437/5651/9576/files/90376362160.pdf
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/67079204555.pdf
    • https://cdn.shopify.com/s/files/1/0432/6794/8706/files/divine_names_dionysius.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/opportunities_beginner_student_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/89689789169.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0663/files/lanujumopexikuxapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/zojenituritarin.pdf
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/cyclization_of_glucose_to_its_hemiacetal_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/girukaluvoledax.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/78648615391.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_off00005e46.bin
7f833f70dcfe13d1bd956ea2c34166d73a41ad77f1434cbb6530ed7825fbf289		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E46 5280 bytes
font_01_sfnt_off00007035.bin
383ec5063964b6216f6fbcfabec16078e739e829660f90d9c6c997013a0982bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 12880 bytes

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