Malicious PDF — malware analysis report

Static analysis result for SHA-256 be4e78e2b9d333dc…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 02:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f1bd9cf98ddca75434d86086aa2ddd8 SHA-1: a1bd20a4cfa3df2adf369576d6817ee9befb9f6f SHA-256: be4e78e2b9d333dc540ce271aacbf5d9bb5e34e6be8a219143bc5cbc4b36b15d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wb?keyword=calligraphy%20a%20to%20z%20pdf', which is flagged as malicious. This suggests a link farm or SEO poisoning attack designed to redirect users to malicious content.

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=calligraphy%20a%20to%20z%20pdf
    • http://files.olitan.com/uploads/1/3/0/7/130775395/gejifajet_lifov_kezujara.pdf
    • http://files.elderresourcesofri.com/uploads/1/3/0/9/130969761/766547.pdf
    • http://files.eleanormcook.com/uploads/1/3/0/8/130873997/5568018.pdf
    • http://xarafi.laurenpaigekennedy.com/uploads/1/3/0/7/130776023/valajupejovul.pdf
    • http://files.homewise618.com/uploads/1/3/0/7/130776088/2cf43a5aab87.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1939/files/60962618532.pdf
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/flash_trek_broken_mirror.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/allan_quatermain_sinhala.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9439/files/8917099578.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bebupikisanomagidilu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0041/2835/files/bbbp_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/rumizasovubigiwuti.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/poxes.pdf
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/theory_of_computer_science_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/4503/4911/files/acoustic_analysis_of_speech_kent.pdf
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/zonexewabebokale.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_off00005bb5.bin
52a201fd4f177ad8f17a2af14d951f502512aaf462ea1fb5d6021ca0aeee8163		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB5 5180 bytes
font_01_sfnt_off00006d5e.bin
8e1561a506d58109e083d15e898a037ced748d428220947c3a030ac49fa734fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5E 9888 bytes

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