Malicious PDF — malware analysis report

Static analysis result for SHA-256 993627c3c9c13e6d…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 08:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba3bfc657341e80acd254eeabf51033b SHA-1: cf23d0dc0ea4ccba3d59452ecb67f514fa0394cb SHA-256: 993627c3c9c13e6db28a048f4db2e94e0c571fc0d5ad1639f1af78a0cd578165
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body text, though heavily obfuscated, contains a reference to 'Bet365 software free' and a URL that resolves to a malicious redirector. This suggests the document is designed to trick users into clicking the link, likely leading to malware download or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bet365+software+free
    • http://files.liverpooldesignagency.com/uploads/1/3/2/3/132303163/nidok-vijofimegisex.pdf
    • http://datarexid.maplephoenix.com/uploads/1/3/1/4/131408738/7499788.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/toxotamufabokawimigu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/avertebrata_laut.pdf
    • https://cdn.shopify.com/s/files/1/0440/2793/6918/files/watchmen_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/xoxuzamemizabewusidinuwab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/haynes_car_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3785/files/futureburebobamijakikafe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9215/5295/files/pupodiwe.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/sql_interview_questions_and_answers_for_experienced.pdf
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/68585030274.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_off000060db.bin
64ed477e6346067a25a0d5c91b80cf89d77dc8a304cd4822c907f999b9d7fe40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DB 5312 bytes
font_01_sfnt_off00007308.bin
80c72dfd579eb218a719abf46b1729813365f72ac583f48e8017233307f0370e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7308 10308 bytes

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