Malicious PDF — malware analysis report

Static analysis result for SHA-256 3203a164a2125fd8…

MALICIOUS

PDF

42.6 KB Created: 2020-08-22 13:40:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a61bd466700385cdb95a7a22ef66ea86 SHA-1: 10b94770ea1a07020d42f88ad9c40548a700c37f SHA-256: 3203a164a2125fd8ef7404f08dbe263dfa583501debbaab1895be6617f0caec2
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=free+iphone+app+barcode+scanner+to+spreadsheet', is designed to trick users into downloading a malicious application. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. 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.cc/pify?keyword=free+iphone+app+barcode+scanner+to+spreadsheet
    • http://files.heatherseagraves.com/uploads/1/3/2/3/132302774/nufigidoruz-reverime-mojavo.pdf
    • http://files.rampartfg.com/uploads/1/3/1/1/131164475/ff5707.pdf
    • http://files.keyinmigration.com.au/uploads/1/3/2/6/132695513/senoxipa-vilegevujiko-kopofew-kepanigile.pdf
    • https://cdn.shopify.com/s/files/1/0437/5438/9665/files/after_chapitre_2_vf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4342/files/81539150030.pdf
    • https://cdn.shopify.com/s/files/1/0439/0351/6824/files/bbmp_trade_license_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/57800971055.pdf
    • https://cdn.shopify.com/s/files/1/0439/1088/9624/files/luboxabewiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/wepepusonugusidilel.pdf
    • https://cdn.shopify.com/s/files/1/0439/7305/0526/files/85263907019.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/samowadokadusumanen.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/tic-_tac-_toe_python.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_off000068f3.bin
bec14302bc4cfb948486a055e0e8005771c869449fc1dbbfea143584cbbc0f1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F3 5224 bytes
font_01_sfnt_off00007a9e.bin
9b186450e66fcdfd20f626353a6c8ba6d7357dda63f63516f81348b36156e005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9E 10232 bytes

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