Malicious PDF — malware analysis report

Static analysis result for SHA-256 187e001874b7cb64…

MALICIOUS

PDF

54.1 KB Created: 2020-08-31 02:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a63c2f2656677f8a1559f85687090161 SHA-1: 779eae240b024b0a934f4733958e66ede599da46 SHA-256: 187e001874b7cb643769a16a89a7e745c758e5e9547dacdd39e9adee4834de3f
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or to download further malware.

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=enhancement+shaman+3.3+5+pve+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_65dd4643af9f455c84a9920ba3ddc9b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f618a7c12af84a7b986e8550d49bd2d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_abcc28a4d8af49968202b82dd3743905.pdf
    • https://static.usrfiles.com/ugd/b8c837_354df30bc46644f79a13d221175f54f0.pdf
    • https://static.usrfiles.com/ugd/d78803_c20c20c61c56473e97941961ceff6a02.pdf
    • https://static.usrfiles.com/ugd/45e30f_8425edbda5dd442fabf3a676c14898bf.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_6f39fb61ca7a46fdbd17847eb6a884a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c27b2f29272466d99dc3253a7eca9cf.pdf
    • https://static.usrfiles.com/ugd/0e2875_83feeb4db1ea4631a519411a512e887c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba1c95c30cf7409fb381c6f1eafe6daf.pdf
    • https://cdn.shopify.com/s/files/1/0433/5393/1944/files/56162812776.pdf
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/7639692181.pdf
    • https://cdn.shopify.com/s/files/1/0434/5026/9849/files/bioline_laboratory_online_reports.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/xibaxaxixo.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_off00009348.bin
d1ffc85965023ecee229719655268590c3cc9de0dccc5449dcf79b4b9e7f3bbe
pdf-font-stream PDF embedded font (sfnt) at offset 0x9348 5696 bytes
font_01_sfnt_off0000a689.bin
361747ccda63b6ddd21801d46535f3e1bed0587e070aacc595b27005f22c6090
pdf-font-stream PDF embedded font (sfnt) at offset 0xA689 10744 bytes