Malicious PDF — malware analysis report

Static analysis result for SHA-256 047d20186ffd3413…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 06:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a1b7811ab75af56af3504185c916a96 SHA-1: b3090909f13ecb2ac81d9b965f255db37f6c2024 SHA-256: 047d20186ffd3413d1d93dee89e97132fb403513226650a0c89fbe83dd8973c7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one pointing to a known malicious redirector. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content likely prompts the user to install a browser extension or update to view content, a common social engineering tactic. The presence of a malicious redirector suggests the document is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=virtual+club+penguin
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/denonefasoja.pdf
    • https://cdn.shopify.com/s/files/1/0439/2773/2379/files/89164129430.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/40437296861.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdf
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/jufor.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1774ddf6d114eb98cce210ceae72023.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9e3139bcce8430f922dac828fd2f76d.pdf
    • https://cdn.shopify.com/s/files/1/0438/0868/6237/files/angels_in_america_tony_kushner_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5679/0678/files/agni_natchathiram_songs_masstamilan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4042/3587/files/68376154808.pdf
    • https://cdn.shopify.com/s/files/1/0433/9036/9942/files/98183656432.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/395667921.pdf
    • https://cdn.shopify.com/s/files/1/0434/9198/3512/files/backgrounds_5e.pdf
    • https://cdn.shopify.com/s/files/1/0445/8161/7828/files/91531555198.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.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_off000069bd.bin
f7fcda9df7f12f4975eb7fc1921aace4aad669f86616e5f9a26b2fbdde36f503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BD 5028 bytes
font_01_sfnt_off00007ae2.bin
6100654eee96c18734a5d031690464fc349262b613c143c54c1495f2d280c542		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE2 10720 bytes

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