Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d43929517e5f387…

MALICIOUS

PDF

50.1 KB Created: 2020-09-09 15:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc9db207af1a88df2e99e11ba69c6b0a SHA-1: b32f47c31c9ec7209cde8fe40cb83d5a43a11a16 SHA-256: 3d43929517e5f387e5f18135d9b36acf71632077b34ebe5855e2af88b0660ab7
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=shahrukh+khan+movie++mohabbatein'. This URL is presented within the document body, disguised as a search result for a popular movie, likely to trick users into clicking it. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The ML classifier strongly indicates 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.me/wix?keyword=shahrukh+khan+movie++mohabbatein
    • http://files.thesecretsofbirth.com/uploads/1/3/0/9/130969148/dadomojixavuvisitozi.pdf
    • http://gobulo.ywcahealthandfitness.org/uploads/1/3/2/6/132681481/d3d4075199.pdf
    • http://wuxaj.stellasartgallery.com/uploads/1/3/1/6/131606346/9626637.pdf
    • http://files.pioneerptmd.com/uploads/1/3/1/4/131437285/3196810.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/sara_bareilles_i_choose_you_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/marketing_process_steps.pdf
    • https://cdn.shopify.com/s/files/1/0433/5599/6328/files/37180074757.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/a_first_course_in_abstract_algebra_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0457/0808/3356/files/quickbooks_links_page.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/63981172338.pdf
    • https://static.usrfiles.com/ugd/7f614e_f7e23388dace48dd9e03d8dc0fb355ff.pdf
    • https://static.usrfiles.com/ugd/c33cdb_d8e68b8ad8a140c0b9e6513fd85c6e78.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c4be4313a44495b99655cff6b94bfca.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071b9.bin
a73cd7e1aea5dee99bfecaeafe775d2b820347f33e5aee14cb1f86d0e783ac78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 5080 bytes
font_01_sfnt_off000082dd.bin
60ddd79c4d2ccff7257e3e31b7314c167ca5069a13d41a0f6dfc0123d2c98991		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82DD 10188 bytes
font_02_sfnt_off0000a5f6.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5F6 16164 bytes

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