Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1bc0e2845b8ef92…

MALICIOUS

PDF

57.0 KB Created: 2020-08-12 23:23:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6075b44bf0894a5cdf06dfb88e5d7ce3 SHA-1: 1ba141831d6740b8a37eb7ab08bc01ee433c7973 SHA-256: f1bc0e2845b8ef9241645450ebe236db7abc43481fb5141c648cd67adb733a67
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to domains associated with SEO spam and link farms. One critical heuristic firing indicates a link to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=ayurveda+books+in+gujarati+pdf+free+download'. This suggests the document's primary purpose is to trick users into clicking malicious links under the guise of providing free PDF downloads, likely leading to further compromise.

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/pify?keyword=ayurveda+books+in+gujarati+pdf+free+download
    • http://muxezorag.dmgcvirginia.org/uploads/1/3/0/8/130813528/bitavikasi_satawo_nujiroxi_motumat.pdf
    • http://files.anncarragher.com/uploads/1/3/2/7/132740685/2518897.pdf
    • http://manutel.williamlinwriter.com/uploads/1/3/1/3/131383483/kezapivexur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdf
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/williams_wall_furnace_reset_button.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/torajomugan.pdf
    • https://cdn.shopify.com/s/files/1/0440/1148/7397/files/49732178048.pdf
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/jijuveluwebilutegodifuwuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/tovugak.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/captopril_posologia.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2097/files/18268126679.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/kojugatejawuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/d_letter_names_for_girl_hindu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7627/9702/files/22648589605.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006031.bin
530543394d08b018bfc02c7de42b1f8b1773061bd6e4d865c6586177de55da70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6031 5732 bytes
font_01_sfnt_off000073e2.bin
9bd2b16adb4317a78cce445b3ee779089d471e5a8727f6a3ce3716935acb00f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E2 9828 bytes
font_02_sfnt_off00009345.bin
3f6a090959b1637c3c412f5d57780b5a50a03d3eaef82d731b18388b386f17d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9345 13220 bytes
font_03_sfnt_off0000bdb5.bin
a5e968a90b9cbe004adf086b5fe3a74242a269d20b4a299e6fbbef79864146a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB5 7276 bytes

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