Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd690e5d33c58d9…

MALICIOUS

PDF

50.1 KB Created: 2020-08-30 01:03:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47a1f0e3ad5e9e5d3576b3db0676d474 SHA-1: c8d3f18e669f61a6f51fb2ecf9b58843cb259533 SHA-256: ddd690e5d33c58d9ed78dd015718f8999f11be0a1d8b458d46b8c7bfdad3fe26
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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/wix?keyword=como+se+escribe+supervision+de+supervisar
    • https://static.usrfiles.com/ugd/b8c837_131aae11a9d54ad39cb1a4ef21c1cdca.pdf
    • https://static.usrfiles.com/ugd/0d002d_1ef4c68a55f346f4858930992e72da0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d6882410fd848d0a33e1b415cfd021a.pdf
    • https://static.usrfiles.com/ugd/a59130_7d908bfc4276436d9a062e9e427f83df.pdf
    • https://static.usrfiles.com/ugd/b8c837_e6ddba01e4ed4dab961798c8a11b3927.pdf
    • https://cdn.shopify.com/s/files/1/0439/0181/2904/files/karthus_pro_builds.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/maybe_from_annie_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76222514852.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tomazemajetel.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0f6d74d10bc47bdb90ccbb503061549.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc4e1d3c30f24c46a999aafbd0482c6e.pdf
    • https://static.usrfiles.com/ugd/d54300_0f9d2774ce384a59bbe9caba604f92f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_45dcab2377b64da098b61069f1516db4.pdf
    • https://static.usrfiles.com/ugd/b8c837_479b3f72c64e40299062c282b159bf7e.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5821/files/76577661519.pdf
    • https://cdn.shopify.com/s/files/1/0434/2654/5820/files/april_2019_blank_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/2338949901.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/39514403592.pdf
    • https://cdn.shopify.com/s/files/1/0439/0669/5320/files/38725266080.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_off000068f6.bin
6b921c20b31e25d41f2c84984d911ed18f65f14dc37bb62d2e14b1528fef2e0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x68F6 5292 bytes
font_01_sfnt_off00007ad6.bin
f5e94d0ceb7cceba8e5c58fe1c52ce77e0b85a44932c01e79cd6580322445d6e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD6 12864 bytes
font_02_sfnt_off0000a3d7.bin
7427c6bc67859b578149a261544bb1535a5c5cc5499c5bcf465df30433ecb59a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D7 16200 bytes