Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b55bded6dd7945…

MALICIOUS

PDF

64.6 KB Created: 2020-09-01 19:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d09f0874065de92f77b963064c1c5191 SHA-1: 2c7add65995ff5731e4e974dd5e3bb3c00dc15c6 SHA-256: c2b55bded6dd79455d1e748bb4b0c4bff4d96af382fe3fff6fd458a04baea693
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=hadees+sharif+bukhari+bangla+pdf+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, one of which is 'https://static.usrfiles.com/ugd/a72fa8_90286aabb94a4bcf96718982cfac2632.pdf'. The presence of a 'download button' heuristic suggests a social engineering lure to trick users into clicking these links.

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/wix?keyword=hadees+sharif+bukhari+bangla+pdf+free
    • https://static.usrfiles.com/ugd/a72fa8_90286aabb94a4bcf96718982cfac2632.pdf
    • https://static.usrfiles.com/ugd/0dd040_07672b3b11c7491c893e5dc4d81da249.pdf
    • https://static.usrfiles.com/ugd/b8c837_295d1b478cd3491e9d6f63357d716718.pdf
    • https://static.usrfiles.com/ugd/65b209_887a9f780f4d471796fe4518ade8f86c.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/mowapoxugenavibujabuwowuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/bosch_dishwasher_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/audacity_2._0_5_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/81782144691.pdf
    • https://cdn.shopify.com/s/files/1/0462/7952/4501/files/free_throw_score_sheet.pdf
    • https://static.usrfiles.com/ugd/b8c837_d34944ebd7a840a1aca28e821e20bf63.pdf
    • https://static.usrfiles.com/ugd/111c46_109d226013924bcfb0b3d167f36aefbd.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4ad8f2148d84b52aa9d9178b43073df.pdf
    • https://static.usrfiles.com/ugd/e745be_0d631cc9293441259fb2c3154b7ec56e.pdf
    • https://static.usrfiles.com/ugd/fbccce_0d3a9a477b2046899acaeaf4d20ce091.pdf
    • https://static.usrfiles.com/ugd/808d8c_bc07cb15863e46aa97e3a564a2e91f6f.pdf
    • https://static.usrfiles.com/ugd/41f880_2621928de75b49cdaa506800ef24ff37.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_off00007040.bin
57b9760d5a37320aa2c0c73154035cb068853c719f9c39df0620c3a0230e2afc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7040 5468 bytes
font_01_sfnt_off000082c9.bin
14fbf07b31bea54927d230b13e082154eae2a8cded5b21a258db4bd1440e0e15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C9 13744 bytes
font_02_sfnt_off0000aaad.bin
02d74da33ce8d9c8624d5b9e8ce8859eeb15654785f943caf68a6aa89c84370c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAAD 14908 bytes
font_03_sfnt_off0000d990.bin
a1fadd8b1e824e69d0755edf79d45d8179397dff2900634711bcf01dced15efb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD990 17224 bytes

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