Malicious PDF — malware analysis report

Static analysis result for SHA-256 8709667273adbe8c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-11 21:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9899127fb489130ab580dac9450ce705 SHA-1: 59679a3fbbb876ac07528cf05798fd54c02f4b57 SHA-256: 8709667273adbe8c8a44ffdac763d0ae24263165ca6cef39db7b1cd0495001b7
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bohemian+rhapsody+acordes+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on shopify.com but also including suspicious domains like 'thetechnewssource.com'. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to song lyrics. The ML classifier strongly indicates maliciousness.

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=bohemian+rhapsody+acordes+pdf
    • http://files.thetechnewssource.com/uploads/1/3/0/9/130969080/441031d0783b78.pdf
    • http://files.msjanestutoring.com/uploads/1/3/1/6/131606260/968596.pdf
    • http://files.childenrichmentcenter.org/uploads/1/3/0/7/130775659/rutitopekimop.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/definition_and_scope_of_forensic_science.pdf
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/saropamefolexisere.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/2001_dodge_ram_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/puxegijeweloxadaraz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/ponujomu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/nilafufitare.pdf
    • https://cdn.shopify.com/s/files/1/0431/9952/9120/files/22264447921.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/22512474073.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/riragizewitenu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/836313144.pdf
    • https://cdn.shopify.com/s/files/1/0439/1321/6168/files/wasikesugubab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82505274200.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/30145805929.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_off000062ef.bin
8f941377a3e132a7d836319069bc9098ef938447c27ebded3fe93a893d9485e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 5516 bytes
font_01_sfnt_off00007589.bin
9bf82c8c78639ad5a698a8ea9124a38d8591b0510513a695a2e3418b92e9a037		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7589 10460 bytes

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