Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e14f2e0f73ecbf…

MALICIOUS

PDF

61.8 KB Created: 2020-09-04 15:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a59740c3d5bf01ba7eba6688da951321 SHA-1: 112c8e16622b91fc98814b8dd929cb242224504b SHA-256: 63e14f2e0f73ecbf09b8c20d0f181e8bd03b14306f4ee2fc95bf4690e8824c8f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a link to a known malicious redirector, indicating a phishing or malicious content distribution attempt. It also features a large number of links to other PDFs, suggesting a link farm for SEO manipulation. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=boxing+vs+unboxing+performance+c%2523
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/96bf9d_ea92e58b586341828dc7c198eae1e26f.pdf
    • https://static.usrfiles.com/ugd/909b15_38bd4bc9afad4ba49797632ee92d64bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc485f64a9e4057b15f325d968dca48.pdf
    • https://static.usrfiles.com/ugd/2813e2_617afefef48a44ce9b41ed9b36f8d578.pdf
    • https://static.usrfiles.com/ugd/c81504_1b5fa7410f144ec191651f7abceaed94.pdf
    • https://static.usrfiles.com/ugd/9cfd0a_f9a13217e9714e91a23ec2af1ba4b642.pdf
    • https://static.usrfiles.com/ugd/6f9b04_0ee0ac33f816424d906180ec30856eb5.pdf
    • https://static.usrfiles.com/ugd/eda9ba_c113fe28792249d29ee9774c68178399.pdf
    • https://static.usrfiles.com/ugd/b8c837_14f1dd89131c460bb4c0268c1c5dedf3.pdf
    • https://static.usrfiles.com/ugd/299074_44069dc15f3247908997e5b288ac9c1b.pdf
    • https://static.usrfiles.com/ugd/87a178_b912e94a26bd4aa8b1e2f5e6becf3dbd.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdf
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/41280998405.pdf
    • https://cdn.shopify.com/s/files/1/0437/7657/3601/files/parallel_circuit_practice_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0464/8425/8984/files/meeting_confirmation_email_templates.pdf
    • https://cdn.shopify.com/s/files/1/0435/5194/8963/files/33969054280.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ef8.bin
5b02bb385c520ad135828ab8ec56c840ac43efbd9e2c10660d5073fb202ba02a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF8 5420 bytes
font_01_sfnt_off0000a157.bin
9f89973940848988d05c5cb711fe8efc866d9eb3d5aee050b1d5dd9474307ee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA157 10580 bytes
font_02_sfnt_off0000c5a1.bin
efe8937f5115b3974d5d374fe0ae738c3e4a355fee1e9ba45511a2aa84eb267b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A1 16608 bytes
font_03_sfnt_off0000db65.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB65 4324 bytes

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