Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be9087088bbf6ca…

MALICIOUS

PDF

51.9 KB Created: 2020-08-17 01:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d4f6415e3628ddd3bf7b9afe8e61386 SHA-1: 9a938379cedd686055e00f52b7b60055d66e6846 SHA-256: 6be9087088bbf6ca19aef47107aa2e1ba67d8c62c275cff0cca1de80bb042dbf
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document body also contains text that appears to be a lure for the redirector, mentioning 'Visual studio 2017 auto format code'. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' suggests the document may also attempt to trick users into executing commands, further indicating malicious intent. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=visual+studio+2017+auto+format+code
    • http://mikokifos.ddtpphinc.com/uploads/1/3/1/4/131437792/sonepogo.pdf
    • http://files.stephvenerus.com/uploads/1/3/1/8/131872054/tutuxejadu_mobokimolofu_bowosonesivu.pdf
    • http://files.millenniumcleaning.net/uploads/1/3/1/3/131398145/gopiveporodabirazum.pdf
    • http://files.barbarablumenthalehrlich.com/uploads/1/3/0/7/130738914/fiburoritigele.pdf
    • http://files.millerschristmastreefarm.com/uploads/1/3/1/1/131164425/cfa857f7e7fa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/6187/7663/files/57355878262.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/sasuxolanado.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/tibuvasevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/gepap.pdf
    • https://cdn.shopify.com/s/files/1/0430/0354/3715/files/rituxaziware.pdf
    • https://cdn.shopify.com/s/files/1/0433/8712/5927/files/37746506458.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4420/files/75381394324.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/47916628010.pdf
    • https://cdn.shopify.com/s/files/1/0431/3209/2573/files/pabeteninozezesotab.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/pawaboratutepamud.pdf
    • https://cdn.shopify.com/s/files/1/0432/1312/7835/files/40492120563.pdf
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/mujowopigagonuradajom.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/37994529480.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d95.bin
6a0ad4cd49f60dc29a894589d98c11c55a576c8dbbf3ebe1f6a3c5d51d8b93c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D95 5540 bytes
font_01_sfnt_off00008053.bin
b8d44682e1b386074c91e50f9ea55f3838e0f5f49d09f7e6639bf26e2b48493d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8053 13368 bytes
font_02_sfnt_off0000abe7.bin
534e44c921e8acb9c8e993207df297c85ca6c672af4c6174c05b3ca24a170572		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABE7 16388 bytes

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