Malicious PDF — malware analysis report

Static analysis result for SHA-256 287a01145e1da192…

MALICIOUS

PDF

46.6 KB Created: 2020-08-31 14:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 629a473265a843e652f28f25aaccd59e SHA-1: 1548a662b6348331506c9091a1e777f95738d595 SHA-256: 287a01145e1da192b989871325527ad2abae7d5e0d5e25ceb8f0a25d75ac1e2b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to disguise the malicious intent with a generic document title and numerous benign-looking links to obscure the primary malicious destination.

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=cicely+berry+exercise+pdf
    • https://static.usrfiles.com/ugd/15cd4d_0fa90d1754ae44ffb562298063f7a142.pdf
    • https://static.usrfiles.com/ugd/b8c837_13c88426f0d94e63b2eba14d524863fe.pdf
    • https://static.usrfiles.com/ugd/04e6f9_f6492fdbbc694c00b340c4d44af64098.pdf
    • https://static.usrfiles.com/ugd/d01287_7d9a5b0ce35445a19c842e5c6049e2b6.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_caf1a44e007b43a7b0faf1934068c5df.pdf
    • https://static.usrfiles.com/ugd/cac9e4_f355bd220a704833889d66f380c4b225.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_60e9d707e00d4056a1e2b89198a43aa9.pdf
    • https://cdn.shopify.com/s/files/1/0429/1674/1286/files/miwedituniribisoripekerik.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/vobukajasudut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5585/6281/files/vuleginavofegopu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8706/8322/files/savobinig.pdf
    • https://cdn.shopify.com/s/files/1/0456/4162/9863/files/85145962099.pdf
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/bowenubir.pdf
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/fisaferoveteni.pdf
    • https://cdn.shopify.com/s/files/1/0436/4563/2665/files/19940964868.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_off0000780a.bin
3c534193a711b87e4c885c7d5f1039c99004ba0744b9df826e809b059332e091		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780A 5152 bytes
font_01_sfnt_off000089a7.bin
d81c2fdf07a2a38ebb09c67eec7b78cdc04df68e058177e86ef188b2e6e285c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89A7 10672 bytes

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