Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e5f9222f0f1b1a…

MALICIOUS

PDF

42.0 KB Created: 2020-08-15 18:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5d84c4ac3d0a95dc802210015d41faf SHA-1: d594b6027997f8f1dd18469ea4274948c509dfcf SHA-256: d6e5f9222f0f1b1a914c99712464393c6b1529d210124db963cade78889eef70
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify URLs, but one critical link redirects to a known malicious infrastructure at ttraff.cc. The document body, though heavily obfuscated, contains the text 'Remove watermark from pdf document online' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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=remove+watermark+from+pdf+document+online
    • http://files.simplymaudie.com/uploads/1/3/2/7/132710791/kawotejoputuvof_jezikutibeve_rexazulati.pdf
    • http://fuwejinax.benedictarenee.com/uploads/1/3/0/8/130814328/1204247.pdf
    • http://files.dragonflyday.org/uploads/1/3/0/7/130776263/e111bfffc205f.pdf
    • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdf
    • http://mutawuxap.fidesdesigncards.com/uploads/1/3/1/3/131398285/telawoxugimuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0426/files/59060757795.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/49095151465.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/89387413479.pdf
    • https://cdn.shopify.com/s/files/1/0440/1076/6486/files/application_for_schengen_visa_austria.pdf
    • https://cdn.shopify.com/s/files/1/0431/6371/3695/files/tajafumurelavimapijeja.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6918/files/1685789718.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/ranede.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/xixekuxuduref.pdf
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/benzimidazoles_mecanismo_de_accion.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/36928673821.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/56625785562.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_off00006738.bin
d31d364e769ffe5e3fcca4ccbca3c3ba1305f945dcc7b9aafc33a72cfa23b125		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 5344 bytes
font_01_sfnt_off00007962.bin
e7ffb731dc05e10dad0f7b8f6038006e6c1afffd582a634008119f7143c209ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7962 9852 bytes

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