Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb8e1ea7f1761bd…

MALICIOUS

PDF

45.4 KB Created: 2020-08-30 09:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 068548dc16ca56212d5215b58dacaeed SHA-1: f8c8c58c23b85a229e4fbc3d4b5795aaf82414ac SHA-256: acb8e1ea7f1761bd862032a1c26d828d55f5d81ce165bdd55635bae36ca99002
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 'https://ttraff.com/wix?keyword=reading+rainbow+song+lyrics'. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links. The ML classifier strongly supports the malicious verdict. No scripts were extracted from this sample.

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/wix?keyword=reading+rainbow+song+lyrics
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/10187850314.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/augusto_cury_inteligencia_multifocal.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/98711175689.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/30160212856.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/34260132782.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/2_forms_of_identification_employment.pdf
    • https://cdn.shopify.com/s/files/1/0434/6170/5888/files/network_cabling_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/pdf_bsc_zoology_syllabus.pdf
    • https://static.usrfiles.com/ugd/b8c837_aabc427c43f2495bb4eb577199b2d6a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1a25227efe24efa84f4228e272ced14.pdf
    • https://cdn.shopify.com/s/files/1/0437/0661/3911/files/19758899870.pdf
    • https://cdn.shopify.com/s/files/1/0450/2405/1358/files/phn_mm_chuyn_i_hnh_nh_sang_word.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/guxabajojibozuvawized.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52209678420.pdf
    • https://cdn.shopify.com/s/files/1/0432/6323/0116/files/60162067572.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000715c.bin
cd6f2772920c49dccf6f0c3163fd0116cdf110b0b48c3e2fe0f3f5a83116c6ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x715C 5448 bytes
font_01_sfnt_off00008401.bin
3205e4accb1ec098d3a80c347ffddd085c607b7459c0d347e82289547913bf22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8401 10676 bytes

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