Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f62eeb9bef9380…

MALICIOUS

PDF

47.3 KB Created: 2020-08-24 02:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6657307ba4376bfa20347f8e3baf067a SHA-1: 76596db0f3d6c24a9cf1ea7c3d9a7963b14ecb07 SHA-256: 02f62eeb9bef938019cd8d813376701ed4edfa75d209b12c45f3a12ada62dcb9
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, one of which, 'https://ttraff.cc/pify?keyword=debugdiag+analysis+report', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent, likely to redirect users to a malicious site.

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/pify?keyword=debugdiag+analysis+report
    • http://gizugu.calgarypopupweddings.com/uploads/1/3/1/4/131454106/mugoja_vujarewijafimob.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/believe_that_you_can.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/risk_management_and_contingency_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9116/files/music_vocabulary_activities.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/surunorilokitofibemefevo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9298/2427/files/kiriwadidurajenizeji.pdf
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/pipewisukuguturivusefip.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/4254269994.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/34091400139.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/iata_city_code_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/9107/4976/files/18676983280.pdf
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/faxusipox.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/xolapelitub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000646f.bin
0e43055c764e97fc5ebf5794a9c596c170f86da52e192dd2c075282216109f5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646F 3236 bytes
font_01_sfnt_off00006ff4.bin
0e89c25a111d75e9389e9900598a7f16e04fefb74349287b30cc330b2ce71a7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF4 5368 bytes
font_02_sfnt_off0000823d.bin
25e19fee6f1f9783cb2d176bf1b6a1fced0e2da65a06330924e9d6460e448341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x823D 14556 bytes

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