Malicious PDF — malware analysis report

Static analysis result for SHA-256 276caf864ab35929…

MALICIOUS

PDF

46.0 KB Created: 2020-07-08 11:31:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 694df2343dc55a7089e1368be475cd1e SHA-1: 296dbcb4f19d95b2d7f4f07300cbdad8dd156dcf SHA-256: 276caf864ab3592938f9e2c8ac015880f7dd4e0f0ebee7e356fe35359aa8540c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a PDF link farm. One critical heuristic indicates these links point to known malicious redirector infrastructure. The document body, though partially obfuscated, contains text related to 'Tecnicas cognitivo conductual para autoestima pdf' and includes URLs that are part of this link farm, suggesting a lure to potentially malicious content. No scripts were extracted from this sample.

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.ru/wb?keyword=tecnicas%20cognitivo%20conductual%20para%20autoestima%20pdf
    • http://files.anndcroghanart.com/uploads/1/3/0/7/130776578/turidufuletax.pdf
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.pdf
    • http://files.livinggodsmission.com/uploads/1/3/0/8/130874413/femobupowufebekoluta.pdf
    • http://files.westfielddentalpa.com/uploads/1/3/0/7/130775942/bavef_kezujuwusuk_javexolizepun.pdf
    • http://files.hebrewdayschool.org/uploads/1/3/0/9/130969242/noxomixupiwupejosenu.pdf
    • http://files.blueacesbakeshoppe.com/uploads/1/3/2/6/132696263/1387438.pdf
    • http://files.careerlinkhighschool.org/uploads/1/3/0/7/130776578/bijapemopebujo.pdf
    • https://fudamowoz.files.wordpress.com/2020/06/77487727848.pdf
    • https://kibemiratet.files.wordpress.com/2020/06/nazukabeva.pdf
    • https://pulimiwuri.files.wordpress.com/2020/06/tuporipu.pdf
    • https://zodamutove.files.wordpress.com/2020/06/gesasexezep.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_off00005ff7.bin
162333e3479155e34c52cf0c70ca7cd69abc230fd48a052d2780f42b83067d85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF7 5368 bytes
font_01_sfnt_off0000721f.bin
31b736e0aa05e39d0926b40778f7d59f1220ffe87f2207bccc0d556f63ff0c68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x721F 10404 bytes
font_02_sfnt_off0000940f.bin
7df9c757af567881a6ec1e901ed80cfbb3f6e307e96188de676cc30f15be1dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x940F 16128 bytes

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