Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dd1eebddfeb17c9…

MALICIOUS

PDF

58.2 KB Created: 2020-09-01 08:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab9dbe763bf1185a86362aed3685e745 SHA-1: 9ab2ea5c75b312827d867c5d9e4ecc482cf8cccf SHA-256: 5dd1eebddfeb17c938942204dc4baaae677d00637d734b4c6c503e41bf5a10fe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The primary link, 'https://ttraff.club/wix?keyword=magic+ball+game++for+pc', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting an attempt to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.club/wix?keyword=magic+ball+game++for+pc
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_da5cbadefd1b449c8b1031826a4d9e80.pdf
    • https://static.usrfiles.com/ugd/f459ea_b78a3b8a77a94cf68bf3335243fac1d9.pdf
    • https://static.usrfiles.com/ugd/0adedf_f0ea2b8dd54b493b88d912b8a82bdd0f.pdf
    • https://static.usrfiles.com/ugd/784815_58f11e0c44594136b64e38484a6a5aac.pdf
    • https://static.usrfiles.com/ugd/0d002d_96d86efca8f84457a3a9e4086cbbb244.pdf
    • https://static.usrfiles.com/ugd/0c41e7_96f801a2427b4585a208c4adbd8f4ce9.pdf
    • https://static.usrfiles.com/ugd/89363e_a1725e2bf4e043db9bcbfecfd6539ae4.pdf
    • https://static.usrfiles.com/ugd/b8c837_c74140e3b1914e63870d22d8e7cf02ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_3107dfe9b730412ba74a3e62a761ee0c.pdf
    • https://static.usrfiles.com/ugd/eaf48f_9b331dab3d2d4eea947f9f7e60df7543.pdf
    • https://static.usrfiles.com/ugd/de65f7_34814280389a4c56ad6d4ef3e45c928f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9f61959076245ed9fa00c96a6d56967.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0822/files/59907550798.pdf
    • https://cdn.shopify.com/s/files/1/0431/7344/5788/files/composition_of_functions_worksheet_1-_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/5944/4896/files/51821904497.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/xidexenewawiruvavanegot.pdf
    • https://cdn.shopify.com/s/files/1/0440/1928/6174/files/75369052511.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2f6.bin
ba55ad3565019b5c587e00ed8577ebc0e8c47af4a16d22e11c7be01fd7ddbd16		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F6 5300 bytes
font_01_sfnt_off0000b4fa.bin
0bc6f2927967629ea0a4a96eda1ba03de5834452ce99c0250822cde7a25873f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FA 12036 bytes

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