Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f3f976f112cfa0…

MALICIOUS

PDF

48.0 KB Created: 2020-09-01 00:49:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e016b43dba8803ccc4dbb60cd158399a SHA-1: 888d8ea7874f6e0dd4210d6f4dd5d15bc795222f SHA-256: f5f3f976f112cfa0699b36baa778c24f1110158938d63bcd80f9670428a983d1
130 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to malicious content. The document body, though heavily obfuscated, contains the same URL and references 'tamilrockers new link 2019 free tamil', suggesting a lure for pirated content. The PDF also contains a large number of links to other PDFs hosted on static.usrfiles.com, indicating a link farm strategy.

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.cc/wix?keyword=tamilrockers+new+link+2019+free++tamil
    • https://static.usrfiles.com/ugd/e4a001_a30bab23baa24f049828534268cce563.pdf
    • https://static.usrfiles.com/ugd/6da380_57c19a4589964ef1a85767626884a5d4.pdf
    • https://static.usrfiles.com/ugd/8acad3_0b3d45e2a4c943c7bac4b593c39a92d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_14528a42e0e348f6a6ba60112970bfb4.pdf
    • https://static.usrfiles.com/ugd/bfbc46_d2024c14824c477e978fe7bb3caae194.pdf
    • https://static.usrfiles.com/ugd/fef806_dd70fdb7c8ae4fe0a5a87fb169d25499.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_7568a745bbaa499abc08453a0467df9d.pdf
    • https://static.usrfiles.com/ugd/81d6a4_329ac4e304d34914927598a425db34de.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/72926913178.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/35475209589.pdf
    • https://cdn.shopify.com/s/files/1/0437/4573/8903/files/literary_devices_in_harrison_bergero.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1443/files/buick_enclave_reviews_2011_consumer_reports.pdf
    • https://cdn.shopify.com/s/files/1/0438/9008/1944/files/14935995794.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/moguzaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/9151/5809/files/adobe_acrobat_editor_free_download_full_version_mac.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_off00007bfc.bin
0279580c67f586390de7ffbcd69046f84e2eade3fcd42f5046f75d8460a576ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFC 5612 bytes
font_01_sfnt_off00008f0f.bin
bead168c6be85f5d2a23d8dabd393d75c76cb536cc1bc0cc65c00e29922c9510
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0F 10592 bytes