Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c074747be44927…

MALICIOUS

PDF

52.6 KB Created: 2020-08-28 23:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dba6ae88ea43479d11ad2a8eabbb971 SHA-1: 8ea3f590e4f0e6244bb00c76da89340a0fe8a961 SHA-256: 00c074747be44927cd2c72ed4f4a8ebd953963a5cc2a98ff71d0aa2c74b2a56d
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified as a link farm, with one prominent URL pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains the primary malicious URL. This suggests the PDF's purpose is to lure users into clicking malicious links, likely leading to further compromise.

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.cc/wix?keyword=emerald+tablets+of+hermes+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0461/1725/7380/files/safe_drinking_alcohol_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0430/3591/8489/files/solabuxolevuxavim.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/kawulifemaw.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e26aba2fe3248e48108a57d43fa3a8c.pdf
    • https://static.usrfiles.com/ugd/b8c837_dfc587d6c35a4f17877ed0369fc95c21.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f5df364077b4c2c9bb7c1e71aeafdba.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb1e6880f2654da2884085ebdeb17af9.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0b36f88c26a46d19c216f3f97faa2aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b2644d78f39464fa3d97d8f0891de10.pdf
    • https://static.usrfiles.com/ugd/b8c837_309a309bfe6143808f7624433e6b85f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2bfe7550c034fc0a0d9026a4d0f3553.pdf
    • https://static.usrfiles.com/ugd/b8c837_047d7581b34d4ac0aea64f87fae868b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_1da48d54109c46d7999633c552ef3fab.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c523a31869c47538eeaff3ab465aa72.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f98010e7f1a449c86d15ffb029b3a66.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fc1.bin
d5be1625c5834b157426ae8292f3f270d6200ccf9abab5ce8d89fa6be970b238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC1 5380 bytes
font_01_sfnt_off000081db.bin
0a4109aa11554137401454c2dd24c1789c2e6b1d4b8548c30a8a1abd43110a27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81DB 10824 bytes
font_02_sfnt_off0000a675.bin
835ee017f4097d16ea84a0ff6593332ff011bd8ceb0e1fc60c585aaf6e900dfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA675 19396 bytes

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