Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aad98ab6fc9ff43…

MALICIOUS

PDF

55.5 KB Created: 2020-08-01 23:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b681c32a35d96031865f4f9e981504a0 SHA-1: d50075824b1338603ad8655bb3be853d48ab4e97 SHA-256: 3aad98ab6fc9ff432bfd5f8162b771d64b336be0f772c17fcda63ff036330707
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, pointing to 'https://ttraff.cc/pify?keyword=minecraft+calm+4'. This URL is likely used to direct the user to a malicious site. The document body, though heavily obfuscated, contains references to 'Minecraft calm 4' and the redirector URL, suggesting a lure to entice users to click the malicious link.

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=minecraft+calm+4
    • http://files.stanfordanscombe.org/uploads/1/3/1/4/131437330/25ad8abdcd60665.pdf
    • http://files.pampervanbeauty.com/uploads/1/3/1/6/131637109/wirinazozimemepep.pdf
    • http://files.ace-coop.org/uploads/1/3/1/4/131437535/9178512.pdf
    • http://files.jaegercounseling.com/uploads/1/3/1/4/131406372/lurodarare_wiliganadi.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/1782504912.pdf
    • https://cdn.shopify.com/s/files/1/0432/6644/1376/files/73744066648.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/wuxalumo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/gosol.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/lapudumujeji.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/76499348017.pdf
    • https://cdn.shopify.com/s/files/1/0433/2837/2904/files/8578890369.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/rovobogolemiwuvim.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/65835151899.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gatafuruzakelimosileraji.pdf
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/tijulepisaneluzej.pdf
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/5984471485.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_off00009bda.bin
ff1b8eaf96072c5887fe3550b8b1fb019f454d83066829900490853b2c7f6162		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDA 4940 bytes
font_01_sfnt_off0000aca1.bin
285528288e4de67fa2d8689b7428f2f40958e1a274e3112c0c24f413219f4872		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACA1 10632 bytes

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