Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1858fe6ec0535c…

MALICIOUS

PDF

58.6 KB Created: 2020-08-05 11:05:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1a2383841dc56bc30751cca180b7143 SHA-1: 465f27b668894cb628b2ec4e3ebd99243a26a55a SHA-256: 2f1858fe6ec0535c7aad554233e2c46537b98dc222d22665ea1d1d466003e751
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'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains the URL 'https://ttraff.com/pify?keyword=actos+administrativos+concepto+pdf', reinforcing the malicious redirector intent.

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=actos+administrativos+concepto+pdf
    • http://files.attorneytmorton.com/uploads/1/3/2/8/132815882/9031601.pdf
    • http://files.physio4athletes.com/uploads/1/3/0/7/130776344/ac202b944188.pdf
    • http://files.carolholtzmanfregoso.com/uploads/1/3/0/7/130739056/9d58e.pdf
    • http://files.ddtotalfitness.ca/uploads/1/3/1/3/131384383/dunizifefe-gefesakofurod.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/omc_control_box.pdf
    • https://cdn.shopify.com/s/files/1/0434/0767/1447/files/76080606426.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/51393882477.pdf
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/99724532075.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6380/files/67549192903.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/numeros_primos_del_1_al_100.pdf
    • https://cdn.shopify.com/s/files/1/0433/2693/1099/files/que_es_un_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84770620138.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/cambiar_documento_de_a_word_online_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/80471678966.pdf
    • https://cdn.shopify.com/s/files/1/0431/6151/8231/files/cinnamon_girl_tab.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/browning_22_auto.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/wonesikaduvavilopefowi.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_off00009877.bin
69496e34a386a11e084acd552201dca14307e9748b1e7a93342c566901dd902e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9877 5104 bytes
font_01_sfnt_off0000a9b4.bin
d489f023508b0b23a828759ffe34e05e728bf8832bde7acf8ac7807ad06a49b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B4 11168 bytes
font_02_sfnt_off0000cda6.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA6 4324 bytes