Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea83c004a82c47d3…

MALICIOUS

PDF

58.9 KB Created: 2020-08-30 08:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2faf1a8f2a4e46f2043170023358c92 SHA-1: cc99d623ab9eb036a92a6400c6038a42a763ca85 SHA-256: ea83c004a82c47d39c978da2ff39193a56c1f9a3821405453bb3365e82268135
154 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it's a redirector link to known malicious infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The primary malicious URL identified is https://ttraff.com/wix?keyword=the+illuminatus+trilogy, which is likely used to lure victims. The document body contains garbled text but includes the malicious URL and several Shopify links, some of which are benign.

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=the+illuminatus+trilogy
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/77606090672.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6566/files/eco_atkins_meal_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0648/3876/files/dnd_3._5_complete_arcane.pdf
    • https://cdn.shopify.com/s/files/1/0439/4300/2270/files/girasujatoxeguguk.pdf
    • https://cdn.shopify.com/s/files/1/0435/0522/1784/files/63477691310.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/gap_analysis_word_document_template.pdf
    • https://cdn.shopify.com/s/files/1/0454/1464/5928/files/sales_and_marketing_executive_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0274/files/neobiotech_implant_removal_kit.pdf
    • https://cdn.shopify.com/s/files/1/0462/5019/7146/files/ace_personal_trainer_manual_audioboo.pdf
    • https://static.usrfiles.com/ugd/3ce946_77cde985daaa4cd0bd37759beae03ce7.pdf
    • https://static.usrfiles.com/ugd/b8c837_23fecec424ef42d7b54f54670bc68783.pdf
    • https://static.usrfiles.com/ugd/f3cb45_9f39d96535a546668bd99c9cb7e8fd88.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_off0000ab37.bin
c93053525e0d71dbba66d36597203f029f73871840abacb29e2c2bcee1b58f5c
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB37 5152 bytes
font_01_sfnt_off0000bc97.bin
f1ebe5a7bd6def7e7c30f85936c07cc34455312e1d97e3578fae8f79f72f823c
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC97 10208 bytes