Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc0097f9f19378b…

MALICIOUS

PDF

141.6 KB Created: 2020-09-15 07:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01340aedffc599c163851cdf06965074 SHA-1: 2e3de9c8cbad5ff845b5243c0b3608acd9ed8cac SHA-256: 7dc0097f9f19378b0bca6b17664d14ada306e88c1f9c11e96bf29bb8716bcbbc
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.me/pify?keyword=soul+eater+little+devil. The document body, though heavily obfuscated, contains this URL, suggesting the document's purpose is to redirect the user to this malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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.me/pify?keyword=soul+eater+little+devil
    • http://tosew.ndhinc.org/uploads/1/3/0/7/130775365/vuzolur.pdf
    • http://files.silverhillmortgage.ca/uploads/1/3/1/4/131437636/kamofagokifuxizo.pdf
    • http://butej.raynecitycourt.org/uploads/1/3/0/7/130739173/b913a240fc4a3.pdf
    • http://wuwalowa.dunnvilleminorfastball.com/uploads/1/3/0/7/130740169/wovusini.pdf
    • http://lagikefas.paperseraglio.com/uploads/1/3/1/6/131607131/8285333.pdf
    • https://static.usrfiles.com/ugd/575363_70f1528382f54376a4c56dcb64575cd1.pdf
    • https://static.usrfiles.com/ugd/b8c837_0fa239f3bdb440fdab8ffae0ecfc174e.pdf
    • https://static.usrfiles.com/ugd/fef373_05886db8f75d4bf28937a9f7a5e8d7e4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7175/files/modern_polarographic_methods_in_analytical_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/tafigina.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/sowotubenikin.pdf
    • https://cdn.shopify.com/s/files/1/0438/6449/0149/files/57312517828.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/b_pharmacy_application_form_date_2019_maharashtra.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000158a1.bin
8eb875f657feaa2c98a96573554c2e1453010249e75d48651a388b89a4ae8ed2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x158A1 48948 bytes
font_01_sfnt_off0001eca4.bin
320cb01fb84d6c188b61e5e6f9a7e47edaac893923fe461d6dd3bc4037d8e609		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1ECA4 4804 bytes
font_02_sfnt_off0001fd0e.bin
5574781ab3a54432e679ecd5b6288c2fe435a2602661015f332de666dc5f7b8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD0E 13988 bytes

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