Malicious PDF — malware analysis report

Static analysis result for SHA-256 054a34811cee5c01…

MALICIOUS

PDF

43.7 KB Created: 2020-08-18 21:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a4742def9a3ec0c7b7f518383501567 SHA-1: c2ec2cbea4224dbf03b21d8f9f8083d414432971 SHA-256: 054a34811cee5c019a6adf491c4d8f471a470922e73fb51a86735f8b97b6bada
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains URLs that are likely part of a lure to redirect users to malicious infrastructure. The presence of multiple Shopify links suggests an attempt to disguise the malicious nature of the content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.ru/pify?keyword=aruba+3200+controller+configuration+guide
    • http://files.dreadnoughtforge.co.uk/uploads/1/3/1/4/131453250/mupezunetobadun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/luropupa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7845/1349/files/curl_application_x-_www-_form-_urlencoded_file.pdf
    • https://cdn.shopify.com/s/files/1/0428/6195/3191/files/riroduvigus.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/guwunafukesarumixisige.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1466/7936/files/burning_steppes_map.pdf
    • https://cdn.shopify.com/s/files/1/0435/9526/8264/files/java_older_version_1._7.pdf
    • https://cdn.shopify.com/s/files/1/0431/6371/3695/files/benefits_of_exercise_during_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3310/files/wegivosakamugefiwuxo.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_off00006b58.bin
22f09e7690dd0d18d9b7f333bc35ffb4c26022020fa41a2ed0c80b67ac6b9595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 5576 bytes
font_01_sfnt_off00007e55.bin
d8488dbf0958c86054d5c6cf8c7891df19a0ff65d7dacd719dcd11b110fcaf4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E55 10456 bytes

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