Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0214e102866e0b5…

MALICIOUS

PDF

52.9 KB Created: 2020-08-16 00:23:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86f8df63786fd6eee19b84c4b11672a SHA-1: 2bb58c13132fc70cba583fe57461815451106afd SHA-256: e0214e102866e0b5243aa5f668b5216b9a5a0fbf9e4ca4a624101789072ecaa5
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains, including Shopify. One of these links, https://ttraff.com/wb?keyword=manual%20de%20funciones%20y%20procedimientos%20ejemplos, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious content through a chain of redirects and external resources.

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/wb?keyword=manual%20de%20funciones%20y%20procedimientos%20ejemplos
    • http://xufinelo.bmimportsusa.com/uploads/1/3/2/7/132740541/5635063.pdf
    • http://files.joyandvalorlife.com/uploads/1/3/0/8/130874563/xesavawof.pdf
    • http://files.focusedlearningsolutions.com/uploads/1/3/1/6/131636990/49d8e9.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4231/files/viwokotatojemud.pdf
    • https://cdn.shopify.com/s/files/1/0433/8951/7978/files/72278290140.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/4238/1725/files/vukakisorik.pdf
    • https://cdn.shopify.com/s/files/1/0450/3309/5326/files/operasi_aritmatika_dan_logika_pemrograman_dasar.pdf
    • https://cdn.shopify.com/s/files/1/0438/4158/5314/files/11260922165.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/80714591612.pdf
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/nomanunawadokewimonubuxex.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/renasesesarixaledop.pdf
    • https://cdn.shopify.com/s/files/1/0435/8995/9843/files/weslo_cross_cycle_upright_exercise_bike_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7750/9020/files/campbell_biology_2nd_canadian_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/80970818008.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2952/files/candle_berry_books.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_off00008ef9.bin
5c101237d7854efcdb5e1b15992082d6f9c098478915512aa663d23eb9b6ecf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF9 5484 bytes
font_01_sfnt_off0000a197.bin
ec91fd2fd9759116aa184d7cc3870fe50e38c2ed1bf1793fce7c5c2173a54a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA197 11092 bytes

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