Malicious PDF — malware analysis report

Static analysis result for SHA-256 244d922ad84cdb76…

MALICIOUS

PDF

36.3 KB Created: 2020-08-08 09:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa830245ae1aeec8a117cf7dabce6c55 SHA-1: c18213d739df9414f6ae99ec07ef9d99c3db2a34 SHA-256: 244d922ad84cdb760a02b0da4989261007aa0570a8fb5aaa512cbaa19cb6138a
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=arya+samaj+book+pdf+download'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on Shopify. The presence of a 'download button' lure further supports a social engineering attack. The primary intent appears to be redirecting the user to a malicious site via the ttraff.ru domain.

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/pify?keyword=arya+samaj+book+pdf+download
    • http://files.andrew-rabb.com/uploads/1/3/0/8/130874110/vozisadepejiwep-kisupigire.pdf
    • http://files.drycreekgeneralstore1881.com/uploads/1/3/0/7/130739533/babejezapupov-duzegiretogu-zimopikazo.pdf
    • http://files.borderbowls.net/uploads/1/3/0/8/130814754/dawofukebuwofe.pdf
    • http://bizunadex.neilpresleycox.com/uploads/1/3/0/7/130738799/musigu-tatemu-rokonu-nufegem.pdf
    • http://mobox.wlcbands.com/uploads/1/3/1/4/131438641/vuxejuzu.pdf
    • http://www.aryamantavya.in/wp-content/uploads/2014/04/Dyanand-J
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/manual_of_the_church_of_the_nazarene.pdf
    • https://cdn.shopify.com/s/files/1/0449/8866/1919/files/bls_provider_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/enterobacterias_patogenas.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4700/files/voveganebafedo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2559/4530/files/bisitipiwivewujigebibun.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/11415483863.pdf
    • https://cdn.shopify.com/s/files/1/0431/7390/4545/files/ridimekulanewunipuno.pdf
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/14295525850.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/69721311462.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/preschool_all_about_me_worksheet.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_off00004e02.bin
b7aabf8165ff62652bcc593d853464d263a108052587df3be30e9c76b6a3d634
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E02 5648 bytes
font_01_sfnt_off0000613c.bin
916475319a0600b9d77abdde52d66dabafcfbed893e3bcf7d312ea66fca5c349
pdf-font-stream PDF embedded font (sfnt) at offset 0x613C 10448 bytes