Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6faba4dc57f5322…

MALICIOUS

PDF

43.4 KB Created: 2020-09-12 20:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00b261a6c4250285374672a62cbb2cdd SHA-1: 309fa1ec8bfb7013b2a65d56dbf6c09483dce6d4 SHA-256: d6faba4dc57f53223e05bcdf62cc5e09d23952c6b7adcb80236b141c8ea2bfa5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a PDF related to a business book, likely a lure. The primary malicious URL identified is https://ttraff.cc/wb?keyword=eric%20worre%20go%20pro%20book%20pdf, which is flagged as a malicious redirector. The presence of a link farm further indicates a malicious intent to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=eric%20worre%20go%20pro%20book%20pdf
    • http://files.flagwool.com/uploads/1/3/2/6/132695636/e9c41a5efc5e03.pdf
    • http://files.superiorsearchllc.com/uploads/1/3/2/3/132303238/141406.pdf
    • http://files.themobilepcguys.com/uploads/1/3/0/9/130969306/bd18fb.pdf
    • https://static.usrfiles.com/ugd/ce14f3_d7a1def408b64b7c8c464f37b9adbbe0.pdf
    • https://static.usrfiles.com/ugd/d2759c_c029bf01babd4a069f6a8faabda1b23f.pdf
    • https://static.usrfiles.com/ugd/ba3095_8561f524d859489bbc0edcefc30163d7.pdf
    • https://static.usrfiles.com/ugd/eb6612_2724d14363ff4265bc4b0ae277403fe1.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdf48394d8ce44e69f5f53235c93fd4c.pdf
    • https://static.usrfiles.com/ugd/98857b_33e3d6ade7c7496fa964e91ac92af2f4.pdf
    • https://cdn.shopify.com/s/files/1/0459/2192/7319/files/android_emulator_camera_controls.pdf
    • https://cdn.shopify.com/s/files/1/0462/7457/6533/files/bufewukanuze.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/6701976454.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_off00006084.bin
814c8f0b4e9d06cd26ed0ee995e4e4aeb11d678dc2021cf7b254d923f504f9b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 4756 bytes
font_01_sfnt_off000070cc.bin
363cf2073edd2ede448606fd5c7268b96577c99e5e69165d26dde36578db018c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CC 10136 bytes
font_02_sfnt_off0000932d.bin
ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x932D 4324 bytes

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