Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ba69d33c300918…

MALICIOUS

PDF

46.5 KB Created: 2020-08-31 23:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81f873db13037568fc3a266a9fa0a1f4 SHA-1: 79f2c56678db23111f8cd112e43a0d7067972589 SHA-256: 50ba69d33c3009184d85b90d5975fe5f0006971068c3f42afc30bb4b793b1685
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, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=metformin+1000+mg+once+a+day', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The presence of a link farm and a malicious redirector indicates a high likelihood of this document being used for phishing or malware distribution.

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=metformin+1000+mg+once+a+day
    • https://static.usrfiles.com/ugd/b8c837_ce9fe9742dad456c8961b1dc3fe4173d.pdf
    • https://static.usrfiles.com/ugd/3826db_72d21d8bad2b463893a62686158fc196.pdf
    • https://static.usrfiles.com/ugd/934fc3_12650a06a654403fa7b9a8991fb155ac.pdf
    • https://static.usrfiles.com/ugd/3fc21f_44b0163bb4ca44b190d2811ee2ca1995.pdf
    • https://static.usrfiles.com/ugd/3e9e83_1a3e9f91e82e484aa49fdccb06b53cbc.pdf
    • https://static.usrfiles.com/ugd/cb2bed_7c8afe0b42be467d9f80f11982e68a41.pdf
    • https://static.usrfiles.com/ugd/b8c837_1424bd56622a4d56a1e2ca8feeba0a69.pdf
    • https://static.usrfiles.com/ugd/98857b_c43309ad4eae4169bb19c9cc75320efc.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_a861227eed964a22ba4414f9c7255b26.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fde680701e94438affd19eb660002ba.pdf
    • https://static.usrfiles.com/ugd/345929_4f2662c844fb4105945fef250c7e9979.pdf
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/gegabukekekimimunibepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0666/files/tidowevonovewupa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ganisififado.pdf
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/icloud_icon_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0438/4099/5490/files/53957232936.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_off00006a31.bin
5b430b026d4d80171ade24d8a6eeda012c86d2ed238c51eb49f10957b9e65fce
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A31 5220 bytes
font_01_sfnt_off00007be4.bin
cd1d06fa9c3e35c32e50a9e7d00608fcb85cb9a99a0d31d586237d29a5d3da49
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE4 10180 bytes
font_02_sfnt_off00009eaa.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EAA 4324 bytes