Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c723eb51ec147c…

MALICIOUS

PDF

46.2 KB Created: 2020-08-23 06:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 421f3b47e772993dd84911eae1f2a43c SHA-1: 94155827283679cee5cc587985c4bfbd848515bb SHA-256: 47c723eb51ec147ccb382d5e6f8133a8bb4816217051701770c825af1261c6e5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The document body, though heavily obfuscated, contains text related to a 'compare plugin for notepad' and includes the primary malicious URL. This suggests a social engineering attack aiming to redirect users to 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.ru/pify?keyword=compare+plugin+for+notepad+v7.+5.+6
    • http://resoxa.deborahkeyserdion.com/uploads/1/3/1/6/131606289/f5019008.pdf
    • http://lawaj.kapanshipman.com/uploads/1/3/1/0/131070447/2800077.pdf
    • http://nobunepe.fluidfitperformancetraining.com/uploads/1/3/1/1/131164250/9cd8b392710.pdf
    • http://files.stpeterschildcarecenterinc.com/uploads/1/3/0/8/130813413/fanidad.pdf
    • http://files.kaseltravel.com/uploads/1/3/1/4/131482999/lavom-boxok.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/fighter_5e.pdf
    • https://cdn.shopify.com/s/files/1/0462/3109/3397/files/46894310247.pdf
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/58528492195.pdf
    • https://cdn.shopify.com/s/files/1/0441/3367/9256/files/48506747128.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/xeriwosarosupedakuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/joworivebotenar.pdf
    • https://cdn.shopify.com/s/files/1/0432/3092/0871/files/healthy_fruit_smoothie_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0435/5522/5763/files/gusosiratogumu.pdf
    • https://cdn.shopify.com/s/files/1/0449/9508/4456/files/77888341904.pdf
    • https://cdn.shopify.com/s/files/1/0428/2623/6071/files/vexelobezaf.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_off000073a5.bin
e124d2a96ea4a33b3094a9c694bc067fee00deccfe52d236871f7a4f1c9e33f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A5 5540 bytes
font_01_sfnt_off00008676.bin
90732c38739d75ff626d9d717417473335650ca45f32e0e90cbb4bc7368e9c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8676 10916 bytes

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