Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48d522f90b513e7…

MALICIOUS

PDF

38.8 KB Created: 2020-09-01 02:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba430d37b19b64ed4273502bc0b19f5b SHA-1: 3f279ab69fa8ee0ccea7c9c7fd35b95491effb5b SHA-256: e48d522f90b513e7a98627b34ae803022c91a7e3e256c4e2e4857bd7fcf12770
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=carrabba%2527+s+catering+pdf'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. The presence of numerous other links, while many are benign, indicates a link farm strategy, potentially to improve SEO for malicious content or to obscure the true malicious destination. 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.cc/wix?keyword=carrabba%2527+s+catering+pdf
    • https://cdn.shopify.com/s/files/1/0431/2583/3882/files/diablo_2_high_resolution_mod.pdf
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/76139668640.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/injury_report_rams_vs_ravens.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/regapegas.pdf
    • https://static.usrfiles.com/ugd/3e87bf_07f44ca4d99e4d8a9340782a1a5c8e2e.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9718/files/unimat_sl1000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0445/4160/8100/files/ruby_delete_key_from_hash.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/les_infortunes_de_la_belle_au_bois_dormant_ekladata.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/72860830003.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/gender_equality_report_european_commission.pdf
    • https://cdn.shopify.com/s/files/1/0459/1733/9797/files/covering_islam_edward_said_free.pdf
    • https://cdn.shopify.com/s/files/1/0449/6090/7423/files/bu_bhopal_mba_syllabus.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_off00004d70.bin
609251a381996203e209266aa5ebd3b484a21fe24e9d6b3007eeb3cfc4733eae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D70 5368 bytes
font_01_sfnt_off00005fb3.bin
cb03acd017500927988b7e50e495582682f6c23237ddc20251056c6592ca1707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB3 2744 bytes
font_02_sfnt_off00006b5f.bin
2927a3e3a73a1289ca6eb5a18432556b87d599fcb33f61fb1ff89c1f4df58c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5F 10212 bytes

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