Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3c9dc38aa599c47…

MALICIOUS

PDF

50.6 KB Created: 2020-08-09 11:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be9192710781afff6f1cc93b6ecd8a55 SHA-1: ef75df071c69113d8de67624f8698a081c5c0069 SHA-256: a3c9dc38aa599c4753f12dcd40b7d6a3e8d82a9dc17ce5bc2eb3fd5055ea4bd0
150 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to domains associated with link farms and redirectors, indicating a malicious intent to distribute further payloads or phishing content. The primary malicious URL, https://ttraff.com/pify?keyword=blessed+be+your+name+sheet+music+pdf, is directly linked to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Blessed be your name sheet music pdf' and the malicious URL, suggesting a lure to disguise the malicious redirection.

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.com/pify?keyword=blessed+be+your+name+sheet+music+pdf
    • http://files.nyswip.net/uploads/1/3/0/7/130739570/b6da4f499a.pdf
    • http://lijaku.teamcharlie1819.com/uploads/1/3/1/4/131407089/7675382.pdf
    • http://files.healthwestrealty.com/uploads/1/3/1/3/131380666/78e8e6a2720.pdf
    • http://files.stjohnvianneymorisset.com/uploads/1/3/1/4/131453177/kibujofegegub_bofosififuwoxa_luvamige.pdf
    • https://cdn.shopify.com/s/files/1/0428/6477/1238/files/basic_accounting_entries_examples_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/0826/2297/files/the_catechism_explained.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/99383944211.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/95840486863.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38692385895.pdf
    • https://cdn.shopify.com/s/files/1/0433/5730/7039/files/vosapogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2976/6039/files/16160665655.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/rikerikumeninadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/rogujemakepolironexoxafe.pdf
    • https://cdn.shopify.com/s/files/1/0449/4888/1567/files/amendments_simplified.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/project_appraisal_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/computer_application_in_business_m._com.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_off0000863f.bin
9f38210db6eb6f9801d9b214c6aad21af849e83afa48376b27fd69f6a3b6e0e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x863F 5688 bytes
font_01_sfnt_off00009971.bin
ce1e752e351094f70b3d413e48fc63d8df3e198081f388e413400cc28ede1d07
pdf-font-stream PDF embedded font (sfnt) at offset 0x9971 10456 bytes