Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb542e12582c3798…

MALICIOUS

PDF

34.9 KB Created: 2020-08-31 12:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1bdd5d8712b6884a4b6621bb610fa08c SHA-1: dc0ed55083845b090321c9cd365c5e6fed882b7c SHA-256: bb542e12582c3798d3fcfaa082a123fdd776afaaf4ff9cda4665190877240efb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Jlab epic bluetooth manual'. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify domains, likely to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=jlab+epic+bluetooth+manual
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/jisufomewasupovezaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/wemedagowafoni.pdf
    • https://cdn.shopify.com/s/files/1/0448/1482/7677/files/grobag_heat_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/mebudemomoturobewas.pdf
    • https://cdn.shopify.com/s/files/1/0434/3388/5846/files/acknowledgement_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0450/3266/9334/files/morbidity_and_mortality_weekly_report_abbreviation.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6823/files/jodukifejixagimikexe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6639/9647/files/12305354883.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5508/files/61072768615.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc032211353441aaf2642c7d3f9f21f.pdf
    • https://static.usrfiles.com/ugd/739437_08098dde1dc9486abfc086bef64406f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_de645057731a4d4885797e5ec200911f.pdf
    • https://static.usrfiles.com/ugd/3e9e83_39a77beee4f742e6b56312c0c9b89cc3.pdf
    • https://static.usrfiles.com/ugd/b8c837_a21f28d8f01041dbaa3e5affb1b8db98.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ec6fa03b22d487ca22ac3d8f9f580e4.pdf
    • https://static.usrfiles.com/ugd/41a0b6_8cb869ae6218475a971d61ee7b146f5f.pdf
    • https://static.usrfiles.com/ugd/33ab24_51838e7f0ef94cfb9ab0c83ccc14fe3d.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_off00004996.bin
407317ee35cb9bbf3721f06818f6dfb65b3f6b4bb98b11453a42d5eafb0b61ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4996 5028 bytes
font_01_sfnt_off00005a8e.bin
5581abcb0cdf8b91d5a6e7a23bfd9a17811d586b2a10c17e323e2d519b61c340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8E 10780 bytes

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