Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5385fca55be7a58…

MALICIOUS

PDF

48.1 KB Created: 2020-08-07 04:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ff12b6404b8cddd11132fe25f2b498a SHA-1: 7869bd16feae81d103a17db4eb109b8d4e7f24e5 SHA-256: e5385fca55be7a587ce3a0a632593535801542b941900c179542bf4b967a3f5b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=all+prefixes+and+suffixes+list+pdf', is a known redirector. This suggests the document's purpose is to lure users to malicious sites, likely for phishing or malware delivery. No scripts were extracted, and the document body is heavily obfuscated.

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=all+prefixes+and+suffixes+list+pdf
    • http://files.stpaullutheranhartley.com/uploads/1/3/2/6/132695525/1946770.pdf
    • http://files.nmoc.co.uk/uploads/1/3/1/4/131406736/7125497.pdf
    • http://files.bonairetaxi.net/uploads/1/3/1/4/131483719/6232711.pdf
    • http://files.giaddiecreations.com/uploads/1/3/0/7/130739069/b14c4d721.pdf
    • http://files.greenstitch.com/uploads/1/3/0/7/130775677/fopemapazoxasiz-gazimejoxosago-netunoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0904/7717/files/33356840656.pdf
    • https://cdn.shopify.com/s/files/1/0438/4374/7990/files/24424854025.pdf
    • https://cdn.shopify.com/s/files/1/0447/9696/9109/files/etc_defaults_grub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/zimabetevebilanerapapon.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/testicular_torsion_management.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/50940962782.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/sutugetodapagejenezuzas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5344/0414/files/godovisaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/anabolismo_de_los_lipidos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/ladulav.pdf
    • https://cdn.shopify.com/s/files/1/0433/3849/8198/files/dizesejexusojivato.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_off0000776c.bin
7368ca06737388ce165d8e505cbb850bf6cdce20068b97c8dbf0cc62a9a3f4f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x776C 5092 bytes
font_01_sfnt_off000088d0.bin
213762b68468c7895684f9201247428f250602fd5c44f1e207deacae599f850d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D0 13712 bytes

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