Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02eb34776c630dc…

MALICIOUS

PDF

56.8 KB Created: 2020-09-01 10:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b97d91ed457629b8929238fb4dbb5909 SHA-1: 715b4c96b9c17af05dcdf5a91ac59eba47d32789 SHA-256: d02eb34776c630dcdfe4a77aaa0c737046e7b1c0abb96a82ea22cf4f4e50a448
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and appears to be a lure for a 'maths practice book for class 4 pdf'. The file also contains a PDF link farm heuristic, indicating a large number of outbound links, many of which are to benign Shopify domains, but the primary redirector is malicious. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=maths+practice+book+for+class+4+pdf
    • https://static.usrfiles.com/ugd/902d29_eb36eb9d387d410cb3a51274ffa4af45.pdf
    • https://static.usrfiles.com/ugd/b8c837_29d3032025114b37a63b1c20dcdd4ee5.pdf
    • https://static.usrfiles.com/ugd/de02f3_e8713a1549e440e3862d5bffa1acf363.pdf
    • https://static.usrfiles.com/ugd/2274a7_22634792e931425faf613c69f97da86b.pdf
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/convert_to_word_online_using_nitro.pdf
    • https://cdn.shopify.com/s/files/1/0438/4591/0678/files/firikavasa.pdf
    • https://cdn.shopify.com/s/files/1/0461/4180/0601/files/sumitomo_sa1200_load_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/xurigixigaraxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/kozowudiruwenoxiwiza.pdf
    • https://static.usrfiles.com/ugd/538d67_c799a940362e47b8821986d549bb34f1.pdf
    • https://static.usrfiles.com/ugd/72216b_9ac8dd257b66495098fab80a5b969842.pdf
    • https://static.usrfiles.com/ugd/9b33c5_4b46f01e9e67495b976d63131444451c.pdf
    • https://static.usrfiles.com/ugd/0e2875_7dffb56566db49128d8349eeae04d2e2.pdf
    • https://static.usrfiles.com/ugd/c8a981_fd2b3024b84c4a40a1341764a9b446c0.pdf
    • https://static.usrfiles.com/ugd/99a8f2_89051253f99542368a3671bf3b879f5b.pdf
    • https://static.usrfiles.com/ugd/c8a981_c83b6b7625944773b79b8ecc4ab196cb.pdf
    • https://static.usrfiles.com/ugd/314c35_c2246af949964d62af9a1641cb41e59e.pdf
    • https://static.usrfiles.com/ugd/74a852_572dab088b3f4ca79ebdeeaed65fd055.pdf
    • https://static.usrfiles.com/ugd/4dd980_7386ed91f4cc4023bdbb3bb66eef3cc6.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007082.bin
00a55655d8b1c7c892264ad32d5d8baeb805811f52cf8280420d1f08beeb8c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7082 5540 bytes
font_01_sfnt_off00008353.bin
4197522ca16eaf86767828114e8715a35dcc2fa599e83d4cc7b3785d85c682e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8353 7536 bytes
font_02_sfnt_off000098b4.bin
4be3e8b2d3fe5b9b85d32c1664d1ca466259020a29780907d0c14d5cd171b1be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98B4 10232 bytes
font_03_sfnt_off0000bbb3.bin
c1e6ffc75750c5739b28184ea098192487e1c360ff13057a509a4a6bbbe05e79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB3 17492 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.