Malicious PDF — malware analysis report

Static analysis result for SHA-256 69aed941ec0208de…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 20:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c63508b52b0aff8479e657b1031a025 SHA-1: 403c41ae666163b93ed73e7e72e21c9be7ddcf78 SHA-256: 69aed941ec0208de44e3482e6b630b4f2380500d55f67ed46ba2a7f1f537f66e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector. This suggests an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=codigos+comando+universal+tv.+chungh
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_c2f8f2fbdcf547dda6a39cd51677acb7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d9209eeff2e4894aded3050dffe764c.pdf
    • https://static.usrfiles.com/ugd/b8c837_3dac6d33d23745beac1c2bc26ccdf979.pdf
    • https://static.usrfiles.com/ugd/3b7182_5bfe9dd4f9154eecbb217c3310fbba3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf40f4c26e664fb09c7741a6be1858b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_2984490deefa4548872edf3be348ae19.pdf
    • https://static.usrfiles.com/ugd/b8c837_85251ad486794e26b62a980bd3aacaf1.pdf
    • https://static.usrfiles.com/ugd/daca0d_e2b11e00daa94b3890b1388787aacc2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_69b72b5c419a41638619da79497bca0c.pdf
    • https://cdn.shopify.com/s/files/1/0441/2866/5752/files/small_aircraft_wing_structure_design.pdf
    • https://cdn.shopify.com/s/files/1/0437/1261/0457/files/zowopiferuruwipezavajux.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7269/files/tutorial_camera_raw_cs6.pdf
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/17381654590.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/77210411722.pdf
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/lowes_orange_city.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/39849208814.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/gokodomoselisimakakowag.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/diagrama_causa_e_efeito.pdf
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/las_ciencias_sociales.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d70.bin
45e26ee6d6043aeaebf0415c3d84d2284091a8d94c9fe1ad80334ee435e2ad43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D70 5352 bytes
font_01_sfnt_off00006f7f.bin
db28277b2e586e7e4f3d0c98a955d402b941e6087baad5b3f35124a06a8b7970		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7F 10128 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.