Malicious PDF — malware analysis report

Static analysis result for SHA-256 33afffa16fec91fe…

MALICIOUS

PDF

131.1 KB Created: 2020-09-02 05:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8492d75eb32311c5c2ae54c55e76b3d SHA-1: 1048f20f7100beea8919db015a5f5c7783a47ed1 SHA-256: 33afffa16fec91fe112ec75dfd5b55ce7de99a1becf2e44cb252ab5765e5cbe8
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a download button, aiming to lure users to a potentially harmful website. The document body also contains the same malicious URL, reinforcing the intent to redirect the user. The presence of a link farm further suggests a malicious SEO-driven distribution method.

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.link/pify?keyword=best+ps2+emulator+for+android+quora
    • https://cdn.shopify.com/s/files/1/0431/3730/2679/files/jixegilesazojad.pdf
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/trx_abs_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/nupewokisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9632/files/tamoxadulazefajubap.pdf
    • https://static.usrfiles.com/ugd/078c79_b48070478374441f9a59248f976fba08.pdf
    • https://static.usrfiles.com/ugd/ecd213_88e2715a382844efa4abfe942cc2f991.pdf
    • https://static.usrfiles.com/ugd/086daf_60b886c9ad7449a281924c248b9cdee3.pdf
    • https://static.usrfiles.com/ugd/5a1791_0f44e3842f2f485e85038154d4e81654.pdf
    • https://static.usrfiles.com/ugd/590778_3d5bed4443ea45ad8780f80fd1d0df90.pdf
    • https://static.usrfiles.com/ugd/913720_df8c7b8bbe85403d8a1bdc30952b2af8.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_6768af267f8e456eb8e20b3d5747be86.pdf
    • https://static.usrfiles.com/ugd/b444d4_1c4a222e5ab34f348a8dd527f67a537b.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ee0e4978d2f4d1aa929704d3dc48fbb.pdf
    • https://static.usrfiles.com/ugd/2c7c49_92926c92c19447dc9aaa267e82d883be.pdf
    • https://static.usrfiles.com/ugd/9b33c5_9d51ee19cd5146f1b08aeaaaa15b7037.pdf
    • https://static.usrfiles.com/ugd/b28561_fb0cf3e9c8944587b274bb8859027ee4.pdf
    • https://static.usrfiles.com/ugd/808d8c_46fe54d967b74538b6cc250a06ee8c6c.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_off0001ad97.bin
2a22196402e070f533fa95fd4358ede779e51680f938843a7f16f8998761275b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD97 5376 bytes
font_01_sfnt_off0001bfc3.bin
819a0a1f42c19e4fffe32b3dcb50abd976391b603ce8c850a6496fa1621ebb7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1BFC3 15308 bytes
font_02_sfnt_off0001f07e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F07E 4324 bytes