Malicious PDF — malware analysis report

Static analysis result for SHA-256 0201ac6b5875c616…

MALICIOUS

PDF

43.5 KB Created: 2020-08-31 07:23:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e655369877763d50d8be323b3d2abab SHA-1: 016287bd34ddd19e193fa0ba4260d07119486622 SHA-256: 0201ac6b5875c6168db1f3b8b7b5dea490f7d5d7e1b528bcb9d441a6088c927b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that leads to this redirector. This suggests an attempt to direct users to malicious content, likely for further exploitation or phishing.

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=historias+de+rescate+de+gato+asombro
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ab059d_c19e32a9b29a4bf48f4b33341adfc887.pdf
    • https://static.usrfiles.com/ugd/b8c837_68d2c8855b2a4a2b8bc2f4f02c9fc655.pdf
    • https://static.usrfiles.com/ugd/b8c837_d042635540de4ebbb0ddd2c913928607.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_4ef4b569b9894245b34f908ba9b6689e.pdf
    • https://static.usrfiles.com/ugd/b8c837_fae9ca00ce134c25baf418245a62528c.pdf
    • https://static.usrfiles.com/ugd/f55bec_59c992c119f54acbbcda212d5d8d1031.pdf
    • https://static.usrfiles.com/ugd/9c43ec_be7c89a11b6a4a94b0292c1bf4b8e366.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_bc0647c9f2054edfa2975971d2702399.pdf
    • https://cdn.shopify.com/s/files/1/0435/5240/7704/files/author_s_tone_worksheet_4th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0459/2241/8839/files/60771797372.pdf
    • https://cdn.shopify.com/s/files/1/0463/1940/3168/files/2011_ford_super_duty_towing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/rgb_to_hex_python.pdf
    • https://cdn.shopify.com/s/files/1/0438/6570/2565/files/fenifasefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/62092092474.pdf
    • https://cdn.shopify.com/s/files/1/0431/1993/5655/files/pasisimesabube.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/kodi_16.1_jarvis_download_apk.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a03.bin
1f2400ab2964f0c97d9086862baa585a5a435284ac104c515fe7c0d3c28306dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A03 5328 bytes
font_01_sfnt_off00007c01.bin
bf3ae70552ddb9afd2b044b924c8bed7541390997b480050dd67b2ad26efeea6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C01 10792 bytes