Malicious PDF — malware analysis report

Static analysis result for SHA-256 b982f57cce01ced4…

MALICIOUS

PDF

35.3 KB Created: 2020-08-05 15:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e26816e5e09f99ccbdd6058bc434f66 SHA-1: df1f8d47de802c95a699be8a7834203b59f45e8f SHA-256: b982f57cce01ced4a6a3d722dfdf55d51abe592a703ee394142cd4734f6a5dea
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=academy+stars+3+pdf, which is likely used to lure users to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a link farm heuristic further suggests an attempt to distribute 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=academy+stars+3+pdf
    • http://files.edgelandersmusic.com/uploads/1/3/0/8/130815026/polekobobutok_japezimosus_bobenaxis.pdf
    • http://files.sunnyhillstennisclub.org/uploads/1/3/2/7/132740764/jetolo.pdf
    • http://files.myhillchurch.com/uploads/1/3/0/7/130775221/tiputo_bijutowuxusex_xizenu_nasegefawepu.pdf
    • http://files.earthskydayspa.com/uploads/1/3/1/0/131070561/vaguziligumuzo.pdf
    • http://files.bioscienceessentials2brn.com/uploads/1/3/1/6/131637043/9222355.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwofomakilaxenifotet.pdf
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/51531560659.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/10355015540.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/nunokazizakomaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/91643978702.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/jedufelet.pdf
    • https://cdn.shopify.com/s/files/1/0437/8319/2738/files/vetirutenesi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/23431425660.pdf
    • https://cdn.shopify.com/s/files/1/0428/2934/9030/files/joxoforoviwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.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_off00004d4a.bin
3344bb1f8a9b0625a46f74a79b17351e92408fc0b7cce971ba4615d4d51443c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D4A 5524 bytes
font_01_sfnt_off0000600a.bin
df34e8b5748a315f068747ebeffeec09fe52d92b29af23b1eb60186e676b9928		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600A 9612 bytes

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