Malicious PDF — malware analysis report

Static analysis result for SHA-256 aedbae9382d8a650…

MALICIOUS

PDF

43.1 KB Created: 2020-08-29 22:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d24b1c65279c9089a0d8ad671a90b29c SHA-1: 2f9d3e9c6f27cbc67b851b83858c7d55b316a50a SHA-256: aedbae9382d8a650ba1875b9d3c0a63fc5c928110d985588784900eb9b5a615f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link pointing to 'ttraff.com' which is associated with a lure for a game download. The document body and heuristics indicate a link farm strategy, likely to distribute malware or phishing content. The ML classifier strongly supports the malicious nature of this PDF.

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.com/wix?keyword=the+adventure+of+tintin+game+apk+data
    • https://cdn.shopify.com/s/files/1/0435/3002/7157/files/91706358763.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fokukivovasogu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/nekokimurapifo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5165/5061/files/mathematical_modelling_notes.pdf
    • https://static.usrfiles.com/ugd/36f25b_c8a0778025844813b71a881af2096e8b.pdf
    • https://static.usrfiles.com/ugd/0d9a50_7fde27f94e1a447da1dddbaaf5e1320f.pdf
    • https://static.usrfiles.com/ugd/136d07_a6205b807cbf4f14a28ec058868abfa2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c112fd4767cd431aad59b708858221f5.pdf
    • https://cdn.shopify.com/s/files/1/0435/3140/3423/files/bebuwipekukozidota.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/wetifekonutulokidoxu.pdf
    • https://cdn.shopify.com/s/files/1/0465/1158/7478/files/wejivalulozuximituzave.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1966/files/25135047929.pdf
    • https://static.usrfiles.com/ugd/b8c837_2194ea78d2544d08ad7d57aa5fd3d928.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_985a424d830d4406aa79c975c3017185.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f31e5b92342443bbf0fd6b95516c983.pdf
    • https://static.usrfiles.com/ugd/b8c837_f57d45ea83db45508d26d71f8f92f58c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4985129fd57a4576b36b95f300dba106.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a4b.bin
83d48ba7f3415f2b64e9602049be0f00890b00a6b3489b99a6e35bfc1156b6d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4B 5320 bytes
font_01_sfnt_off00007c41.bin
b19538ca5e6aa9e4d2a5b6b4d5442be724786b2c5dc0b6e7fcce7912d1ddfa27
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C41 10300 bytes