Malicious PDF — malware analysis report

Static analysis result for SHA-256 0069d9d9dd43d5af…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 23:03:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b11ef1f007f2be8150a02d10a5ec4277 SHA-1: 5d6b32f73ef898c320f11bc4b7d88ed301e0736a SHA-256: 0069d9d9dd43d5af9644fe5d0862e47b4820eabf998765824e60217a4f59a71c
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=comunicaciones+por+satelite+rodolfo+neri+vela+pdf'. This URL is likely used to redirect the user to a malicious site. The PDF also contains a large number of external links, suggesting a link farm or redirection tactic. The ML classifier strongly indicates 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.me/wix?keyword=comunicaciones+por+satelite+rodolfo+neri+vela+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/856cea_ff55917e2c854ca49c7158203bfa0da1.pdf
    • https://static.usrfiles.com/ugd/b8c837_6077fea1ecaa4c87afd75ccf61108b86.pdf
    • https://static.usrfiles.com/ugd/bb13a2_7f9e15fc612040a0beeb609176da4191.pdf
    • https://static.usrfiles.com/ugd/b8c837_e6954d8db25e43c4a0a423206b51169f.pdf
    • https://static.usrfiles.com/ugd/b8c837_a97b7b482b1f4b9d9018c8a9f4f5b253.pdf
    • https://cdn.shopify.com/s/files/1/0430/9486/8122/files/86634825172.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/adding_bluehost_email_to_android.pdf
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/35793929946.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90296180399.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/affirmative_form_of_have_got.pdf
    • https://cdn.shopify.com/s/files/1/0434/5338/2822/files/www.towordconverter._net_en_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/zemuseximafovedebepaziful.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/29121673151.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/horse_colouring_sheets_printable.pdf
    • https://static.usrfiles.com/ugd/b8c837_823c07329320432d8a986852a2fd08fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4e5cb02f64a4c29929b5ac1cba43dae.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a38e8ebcf63434ba231abaef4201637.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_off000069d7.bin
19f5a11212cb8ff77406cf80a3dea3a748e8631cd9ab412533e6a3bf9507b1fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69D7 5264 bytes
font_01_sfnt_off00007ba6.bin
fcaaf62955b7842b88d9225cc7030f44e8bf71c71f9f5aa209eac0071f90a89f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA6 10836 bytes

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