Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c7523352f482899…

MALICIOUS

PDF

42.9 KB Created: 2020-08-21 16:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb40bc0abdfd6c01d93ea32e4533fc8 SHA-1: 101fbc64c8e1009173e221ebe6e35d865e2ec119 SHA-256: 3c7523352f482899145ae8db176535aa2c982e0c42569be5ab5b87c1ec7c4c92
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com, which is also present in the document body. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are hosted on Shopify. The primary malicious URL is designed to redirect users to potentially harmful content, likely a phishing or malware distribution site, under the guise of an Android security alert.

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.com/pify?keyword=lock+restricted+mode+on+android
    • http://files.204titude.com/uploads/1/3/1/3/131380343/kadev_rotamaveziso_nidonutesox.pdf
    • http://kuxiro.miweddingpainter.com/uploads/1/3/2/8/132815806/7847985.pdf
    • http://tilezo.augustahomesnc.com/uploads/1/3/1/8/131857631/8615836.pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/277049034.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8150/files/mebin.pdf
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/fetojigadusefenokizem.pdf
    • https://cdn.shopify.com/s/files/1/0462/9138/6529/files/53300496084.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9661/files/aws_certified_solutions_architect_official_study_guide_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/que_es_el_aprendizaje_significativo.pdf
    • https://cdn.shopify.com/s/files/1/0439/0728/5147/files/23557500986.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/cartilha_meio_ambiente.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/synonyms_1000_words.pdf
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/sewamodonel.pdf
    • https://cdn.shopify.com/s/files/1/0435/0646/6976/files/zaronikomeduxoz.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_off00005f94.bin
4f90c586b434e28660385e3461d77eb417001b35071b54e99cdb36a5d44d405b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F94 4844 bytes
font_01_sfnt_off00006fe2.bin
0e8789b605ab90ba55b65ada34addeec8af2e78d36e0e687a6a80330d7e5be08
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 9548 bytes
font_02_sfnt_off000090ac.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x90AC 4324 bytes