Malicious PDF — malware analysis report

Static analysis result for SHA-256 d041b4eede77c754…

MALICIOUS

PDF

38.8 KB Created: 2020-08-10 09:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 432cb3b8a18ca0500feef25d6a497c13 SHA-1: 16dc57817dead42004f2b4342cc7eacf71029c4c SHA-256: d041b4eede77c7543992775b5d840a64fc103b7ed00d5b6e9a5c79ee502b4fb6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=capacitor+start+induction+run+motor+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of numerous Shopify-hosted PDF links, while some are benign, contributes to a link farm tactic to potentially improve search engine ranking for malicious content.

Heuristics 3

  • 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.
  • 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=capacitor+start+induction+run+motor+pdf
    • http://files.mariannemcshane.com/uploads/1/3/0/7/130776529/dizen.pdf
    • http://files.pioneerradio.org/uploads/1/3/0/7/130740112/modajebukuzozi.pdf
    • http://files.twolidesign.com/uploads/1/3/0/7/130739488/5bed3b2b6a0b.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/collins_english_dictionary_and_thesaurus.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/jibowibojiluzako.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/learn_python_the_hard_way_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9833/3599/files/excel_formulas_with_examples_in_excel_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/86092393370.pdf
    • https://cdn.shopify.com/s/files/1/0430/5993/7434/files/innumerable_meanings_sutra.pdf
    • https://cdn.shopify.com/s/files/1/0432/6994/7555/files/7472604922.pdf
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/relizilime.pdf
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/2014_polaris_rzr_800_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4211/0625/files/numokimuv.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_off00005c1b.bin
4ec95703bb817ac28ebee4bcca2acc02fb44e0c4460da90cded228a79b339acd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1B 5172 bytes
font_01_sfnt_off00006d98.bin
fa9cc9a5038e59a1a335fd1032b2afcf4c63888e5d3a7f7f38f24964d64511b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D98 9684 bytes

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