Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba5c66b84858c68b…

MALICIOUS

PDF

50.2 KB Created: 2020-08-19 01:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1f9fbf91144816baf82f87a761badba SHA-1: 13d3f19c79fc9bafd03f467080e38b9e6e74ef21 SHA-256: ba5c66b84858c68babb0030e8fa5b9df84a4b962c606c16035757ad331febe34
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for "Java ee jdk 1. 8 64 bit". The document also features a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. The primary malicious IOC is the ttraff.cc redirector URL, which is likely used to funnel victims to further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=java+ee+jdk+1.+8++64+bit
    • http://files.integrativemedsci.org/uploads/1/3/0/7/130776175/881c75.pdf
    • http://gigagixa.livingthegoodlimelife.com/uploads/1/3/0/7/130739385/7935249.pdf
    • http://serato.buildingsonthemove.com/uploads/1/3/0/7/130776617/luvevuvogodeje_zawajanekuvi_dexobozugone.pdf
    • http://files.downrivermortgageone.com/uploads/1/3/2/6/132696113/torinotenupixokeg.pdf
    • http://kixini.ricklewisrealestate.com/uploads/1/3/0/7/130775971/9554723.pdf
    • https://cdn.shopify.com/s/files/1/0432/5376/0160/files/good_hygienic_practices.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/mathematical_statistics_and_data_analysis_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/42434221618.pdf
    • https://cdn.shopify.com/s/files/1/0437/8977/9106/files/jefawizagitibijulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/dajifaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/guralejokelosaxake.pdf
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/libros_de_biotecnologia_vegetal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/55987323135.pdf
    • https://cdn.shopify.com/s/files/1/0447/9824/7078/files/spotify_desktop_windows.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_off00006ff6.bin
1d7955a5ded9b60df3d91476e6329c1ae03bc086c16cbc05a6afb46b4aed96d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 4932 bytes
font_01_sfnt_off000080dc.bin
e3e4a63d6984cde56c2c27f9ec136476e5401c2c89ff3b5cfbb3843466a42d85
pdf-font-stream PDF embedded font (sfnt) at offset 0x80DC 14444 bytes
font_02_sfnt_off0000ad93.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD93 4324 bytes