Malicious PDF — malware analysis report

Static analysis result for SHA-256 0999091d17bd3d83…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 20:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f198bb0e0231fbcd9b31eed694fbab1 SHA-1: d48dc5741173f5d00bf9c278075ac816eca6b13c SHA-256: 0999091d17bd3d83729ce40ce48440609969dff78f26ec7c0c32e7227176d2fa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body mentions a "steering group template" and includes a URL that appears to be part of a link farm designed to manipulate search engine results. This suggests an attempt to drive traffic to malicious or potentially malicious sites.

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.cc/pify?keyword=steering+group+template
    • http://files.tarotartist.net/uploads/1/3/2/6/132681938/8280551.pdf
    • http://wazune.bignihchapter.org/uploads/1/3/0/9/130969723/jutarujabufimotolex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/8365/3535/files/41802486138.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wugituvunajobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1833/files/chromatography_nptel.pdf
    • https://cdn.shopify.com/s/files/1/0434/2530/0647/files/brown_university_logo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0557/files/como_trabajar_autoestima_en_adolescentes.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/zexowarewiwo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/pesawawopadele.pdf
    • https://cdn.shopify.com/s/files/1/0459/6219/9200/files/lace_and_beads_size_guide.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_off0000588e.bin
bf8a642422e9516c5d7c262b7f8949a7bae304f2101bfb70cb1ffb5312c52eeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588E 5064 bytes
font_01_sfnt_off000069b1.bin
912c56ba47ae4312fa3dedfff36dd1663fcf21297507da34675f640ee96c361f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69B1 9932 bytes

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