Malicious PDF — malware analysis report

Static analysis result for SHA-256 63183d65123c7f2e…

MALICIOUS

PDF

63.8 KB Created: 2020-08-29 17:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0ab2d884e472c7467c0646b12c87b80 SHA-1: a0177bb8ba9bca5b79d68c3418da4ecb72190c5e SHA-256: 63183d65123c7f2ec52d590ca4b510351d897490ff3382cdae4cd6a1f6f8be1a
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely disguised as a technical document.

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.me/wix?keyword=planta+baixa+tecnica+completa
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/dizovibolikumimerar.pdf
    • https://cdn.shopify.com/s/files/1/0438/2287/4781/files/51351144287.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/wasoriwip.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/ascii_table_extended.pdf
    • https://cdn.shopify.com/s/files/1/0429/2771/8567/files/67056454488.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/60199860094.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0055/files/47716688177.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/lijepovegupekudu.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fd470b8877947c292e1a654f1a01b2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_3350e7732eff4e7ebd18d9e202cbc4ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_031d0c7ad5fc4b468332a23fdd8b822d.pdf
    • https://static.usrfiles.com/ugd/b8c837_132eb013f89043e59db09a7000f93195.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29318048561.pdf
    • https://cdn.shopify.com/s/files/1/0434/2684/0738/files/somizubuwigajowozirip.pdf
    • https://cdn.shopify.com/s/files/1/0437/2152/3349/files/lepokirodaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/82311722025.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_off00009fa6.bin
ea7969f908ff0beb06e9b4ba74cf4f4ebcad11913db5d2b75a3383ff177929b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA6 5012 bytes
font_01_sfnt_off0000b0a2.bin
a5bb5db759f916c74751b17a67284c8ec43dbf9ea7b610a49b8a44c173102c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A2 13320 bytes
font_02_sfnt_off0000daa1.bin
547aa25baa6b773f2c2680cb21b8e62307e93fd94c90190b96cdb2b9a6058a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA1 16232 bytes

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