Malicious PDF — malware analysis report

Static analysis result for SHA-256 0890c7673ea2d421…

MALICIOUS

PDF

40.0 KB Created: 2020-08-09 14:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72008503b275ef1bf0f16dc8a0492718 SHA-1: 675ffa5268b6626c69d0639fab11e9764eb466e8 SHA-256: 0890c7673ea2d42143223284843c15088b3de5cf3e2267994d6a80ee3e08d29f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, with one identified as a malicious redirector. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest credentials or abuse multi-factor authentication. The presence of multiple external PDF links suggests a link farm or a method to distribute further malicious content, potentially exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.ru/pify?keyword=bertrand+model+pdf
    • http://files.hlcacademy.ca/uploads/1/3/1/8/131857914/6817832.pdf
    • http://files.ofwrealestate.com/uploads/1/3/1/3/131379117/6056215.pdf
    • http://files.groove-consulting.com/uploads/1/3/0/8/130874104/pizisomes.pdf
    • http://files.ronnater.com/uploads/1/3/1/4/131406518/8754280.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/fuditoloxesenoveluruvif.pdf
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/60846645324.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/4096223894.pdf
    • https://cdn.shopify.com/s/files/1/0435/1652/6752/files/neumonia_en_nios_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/niwoxipo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1029/files/memoria_arquitectura_de_computadoras.pdf
    • https://cdn.shopify.com/s/files/1/0434/0334/6078/files/autocad_2d_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/mojemisalobamosiral.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4831/files/vagusap.pdf
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/20928384491.pdf
    • https://cdn.shopify.com/s/files/1/0434/6209/9097/files/wodarulasasilevinujiwavo.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_off00005f15.bin
cbc0c8715d3aa9480b7aeab1b61db55a1812402c9e3fda9e2a0506cc8cd640aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F15 5056 bytes
font_01_sfnt_off00007031.bin
c9426a2613bd42bc9cb286f62456a04dff4dba7450b0af4b070207b4657e6550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7031 10336 bytes

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