Malicious PDF — malware analysis report

Static analysis result for SHA-256 21772cb0bb77f864…

MALICIOUS

PDF

40.8 KB Created: 2020-08-29 23:38:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7894c5e62bd1b6ebbcb540ff359cd21f SHA-1: 1ede0a10f490e37df1a7cd89c2f1f54e6a20227b SHA-256: 21772cb0bb77f864914e00fdfa4f191b7191a3d959de0289cc58ddc700fdb352
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=abc+song+video+free++mp4'. This URL is presented within the document body, suggesting a social engineering attempt to trick the user into clicking it. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, further supporting the malicious intent of redirecting users to external sites.

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.com/wix?keyword=abc+song+video+free++mp4
    • https://static.usrfiles.com/ugd/b8c837_6903332262864fe29263e593f599942b.pdf
    • https://static.usrfiles.com/ugd/b8c837_2556911f02764007aacff729e7e70393.pdf
    • https://static.usrfiles.com/ugd/b8c837_31904147d5864b94abd27a43350977cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_d57874fda43f41878f582f7c25a8cc36.pdf
    • https://static.usrfiles.com/ugd/ae059d_9d1a8de7b08f4505bfac07ae2cd744a7.pdf
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/tanunanozizolelow.pdf
    • https://cdn.shopify.com/s/files/1/0434/6701/4297/files/tamil_new_movies_2018_bollywood.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8067/files/git_delete_tag.pdf
    • https://cdn.shopify.com/s/files/1/0437/5012/9813/files/ignou_bcom_assignment_2020_20_solved.pdf
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/gunolaluvidejogugox.pdf
    • https://cdn.shopify.com/s/files/1/0438/2726/5698/files/54583658992.pdf
    • https://cdn.shopify.com/s/files/1/0440/0657/2197/files/44090734205.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_off00006156.bin
179225f0114167702714fe296308cf210896df60eac73b91a6ada5902b634f93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6156 5508 bytes
font_01_sfnt_off000073ff.bin
aeb2142dd9aed859efb5faf42e1c76d22e59233847e360523137c053c7282df4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FF 10192 bytes

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