Malicious PDF — malware analysis report

Static analysis result for SHA-256 396fe601be71d955…

MALICIOUS

PDF

46.8 KB Created: 2020-08-15 03:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 805c15e6b1f7aa672f3c39f1102aa165 SHA-1: f834047bc92d231b58e59467ad6265b6ae92b20a SHA-256: 396fe601be71d9550fb0f85b6591f09bf3bf53751935dd4875a4595aed7fb44c
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=avg+offline+2019', which is likely intended to trick the user into downloading malicious software. The presence of numerous PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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=avg+offline+2019
    • http://files.goldenraytwinflameearthangel.com/uploads/1/3/1/4/131437881/fafivozejasomat-wixozaxipo-tixovixo.pdf
    • http://files.copybyvan.com/uploads/1/3/0/9/130970022/5826419.pdf
    • https://cdn.shopify.com/s/files/1/0430/5374/4279/files/raxuzuvumigevanusozijusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/13739408933.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/11046347471.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/3431111626.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/castleman_disease_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/5848/6678/files/10905086012.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/59572170364.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/poe_blade_vortex_elementalist_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/kebevejudowozurasozom.pdf
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/woladokupi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5456/files/lixamejawagib.pdf
    • https://cdn.shopify.com/s/files/1/0440/3517/8661/files/zabodujemejejil.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_off000077d6.bin
38b61a6ca9bfabce0a288979768ab9bbeb916ed83957bf168fa29357d2730cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D6 4984 bytes
font_01_sfnt_off00008900.bin
09f7f6788a02172e2575afab44b06c29b23dca27b3390a3b341720eb1f452dce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8900 11152 bytes

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