Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb289f34f819272…

MALICIOUS

PDF

38.1 KB Created: 2020-08-29 19:24:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12286a4b6a4e8f47c8d4813a83457138 SHA-1: ff5fec4f769f74a77ece95b0eb13d8f65a3da29b SHA-256: ffb289f34f8192728cd011ec2774deeb624095210cb0cf07ed57fc35b4178a92
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=hey+jude+piano+solo+sheet+music, which is flagged as malicious. Additionally, a large number of PDF links were found, many pointing to cdn.shopify.com, suggesting a link farm or redirection strategy. The ML classifier also strongly indicated maliciousness.

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=hey+jude+piano+solo+sheet+music
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/rozivezadeputa.pdf
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/popejalalovametamasosezor.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/13288174003.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2171/9959/files/nosedoxizuraxelupo.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbafac0e7d174d3388260a72d41f770f.pdf
    • https://static.usrfiles.com/ugd/b8c837_4599b1e1f34d4d9885625c493d52c647.pdf
    • https://static.usrfiles.com/ugd/b8c837_58ab13cd913f46148ffee3d58e94a141.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a5aa4b91117444d966558782b815cbe.pdf
    • https://static.usrfiles.com/ugd/756799_28f42d5c8d61497aa0cf804d8a5d8fd2.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff72808bf56a467499be93704337857a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a538c46f3e7540e2b482ad1377d0217a.pdf
    • https://static.usrfiles.com/ugd/b8c837_936e6d706b1745e681c286eb4167454a.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba86afe613074227a05aa2af7d7f609d.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/96987770804.pdf
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/62571714041.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/vidmate_app_installing.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rijakilijupefiwopoxafeza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7904/files/66724140234.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_off0000554a.bin
fdead8d162c0f5f0afbdfc544edbf37e5749169dc68d0f734264e32d176ac1aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554A 5356 bytes
font_01_sfnt_off00006766.bin
d85618ed75a9c5b59ad98029e9500e1e33faa63fba55d953e79a64d336ed630c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6766 10524 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.