Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bec229bf501fb7f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-24 01:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ea4f7781e7e25677d6c29b2d86e116b SHA-1: 1be8b268104019d09e64a8b9d9580765f79b764c SHA-256: 6bec229bf501fb7ffb69ba83fc4e1d4c957a471d96ee2f6e22e58ac114a399c2
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body also contains this URL, presented as sheet music, and a list of other URLs, many of which are benign Shopify links. The primary malicious URL is likely intended to lead the user to a phishing or malware distribution site.

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=gavotte+en+rondeau+guitar+sheet+music
    • http://files.elancommunities.com/uploads/1/3/1/1/131163960/8890601.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/7145167753.pdf
    • https://cdn.shopify.com/s/files/1/0431/6594/1917/files/medical_newsletter_templates_microsoft_word.pdf
    • https://cdn.shopify.com/s/files/1/0432/8482/4222/files/how_to_make_balloon_animals.pdf
    • https://cdn.shopify.com/s/files/1/0431/4402/0125/files/idealist_retmen.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7185/files/ableton_live_9_lite_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/2047/4779/files/peptic_ulcer_articles.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2224/files/wallpapers_for_laptop_hd.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/xisisejapasa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/dotav.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/79818865295.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/fotawusoguwuropixile.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/40k_adeptus_mechanicus_codex.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_off000063de.bin
b708e9425061633f22fa8f50f648f074d955c4365e13d8bc8e88dc9fcaf4af45
pdf-font-stream PDF embedded font (sfnt) at offset 0x63DE 5412 bytes
font_01_sfnt_off00007629.bin
e9c8ef7fd3e6a95a188dc9ac5c8291a6de5d1dc4df14087151f5c2725adeefcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7629 9792 bytes