Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff601eb872fa3245…

MALICIOUS

PDF

51.3 KB Created: 2020-08-11 14:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89c3ad56fd101d1c321b02497b2cc211 SHA-1: ef9083e868ddbcff9b2504e96490bb8f782fdeaa SHA-256: ff601eb872fa32459f83c9833f98607e3b6b87cfcd45ddb8991c180776625afe
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, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a link farm strategy, likely to obscure the true malicious destination. The presence of the malicious redirector URL https://ttraff.ru/pify?keyword=la+flor+del+azafran+amarillo+pdf suggests an attempt to lure users to a harmful site. No scripts were extracted from this sample.

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.ru/pify?keyword=la+flor+del+azafran+amarillo+pdf
    • http://files.missjordansclassroom.com/uploads/1/3/0/7/130776841/5406440.pdf
    • http://daxamim.sfhsfbla.com/uploads/1/3/0/7/130738568/xigabam_rerofe.pdf
    • http://files.fcbands.org/uploads/1/3/1/3/131384635/vorudejufigajizud.pdf
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/gubemobolizinezaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/6667/0745/files/jiladudigatuzi.pdf
    • https://cdn.shopify.com/s/files/1/0436/6961/8841/files/radevuvezupipavire.pdf
    • https://cdn.shopify.com/s/files/1/0435/8442/2051/files/badinununabamoreto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokisesuzarutaxiwiru.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7110/files/32858070822.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/dozagunapufaxopuwilebijo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/dulog.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/81700492883.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/piratebay_proxy_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/gimp_user_manual_2._8.pdf
    • https://cdn.shopify.com/s/files/1/0430/5498/9466/files/2574979555.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007217.bin
566ac2f32010755cdd7eb35df2121284b69d43de112de9ef41136ef5ed27a795		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7217 5000 bytes
font_01_sfnt_off0000830c.bin
5b9cd34bed53f500f21d113336fb1c94a355a58ca903e3944d4e980e9362e743		 pdf-font-stream PDF embedded font (sfnt) at offset 0x830C 11328 bytes
font_02_sfnt_off0000a7f8.bin
0df8f9eb814bbd3240b375642bc429d1c2293575964bd8f14400a9868c8f9d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7F8 16600 bytes

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