Malicious PDF — malware analysis report

Static analysis result for SHA-256 15cecc6f1e4ba2ef…

MALICIOUS

PDF

46.6 KB Created: 2020-08-01 10:55:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f5f2c8d44d8553de2bcdd5cc6da977c SHA-1: ba0e80e6ce293d516c4ef227c3ed77cdd523ecb7 SHA-256: 15cecc6f1e4ba2eff128bca237b8d4679649dae5af89bd9cf07f9f5c48a2c1be
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1203 Exploitation for Client Execution

The PDF contains a lure to copy/paste content into a shell, indicating an attempt to trick the user into executing commands. It also hosts numerous links, including one pointing to a known malicious redirector, suggesting it's part of a link farm designed to distribute malware. 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.com/pify?keyword=install+pygame+mac+homebrew
    • http://files.rootconstruction.net/uploads/1/3/0/9/130969220/6850657.pdf
    • http://files.soque.org/uploads/1/3/1/8/131856318/9122452.pdf
    • http://files.venuevaletusa.com/uploads/1/3/1/3/131384025/a132708472.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/12183306552.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/wofumegakomolodorixeke.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/vupafavabafudasakigad.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/xusezitifupas.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/92020264015.pdf
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/86659706491.pdf
    • https://cdn.shopify.com/s/files/1/0431/8170/3319/files/77754846939.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/muparup.pdf
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/fozekiwixojodavalalawe.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_off00006067.bin
831c9924b7242c90dda2579b1987f85459d4fbb18fa19e7883f568e73ffd5ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6067 5620 bytes
font_01_sfnt_off0000736b.bin
853215264d0fa7d23e6cad3bfd811c975081268ca2817d832a3f4ddeeed74b43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736B 10684 bytes
font_02_sfnt_off00009839.bin
a4f616c8ed03231f927c8f6725ddfb6aed79ba1e9c0c9257d690ec40f184d4cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9839 16388 bytes

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