Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0e247d20a8b940…

MALICIOUS

PDF

53.6 KB Created: 2020-08-18 15:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca8cbc3d1415bab5699e2471695fb08c SHA-1: 549861c21162d59ef0296ecceb7592d6cd400dc1 SHA-256: 0f0e247d20a8b94089f378a1f9d0d7f7fdd4ffec9289fd9f39aa8a3b1d750c66
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external PDF links suggests a link farm or SEO manipulation tactic. The embedded URL 'https://ttraff.com/pify?keyword=buddenbrooks+german+pdf' is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

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/pify?keyword=buddenbrooks+german+pdf
    • http://kodewu.gaby-rodriguez.com/uploads/1/3/1/0/131070450/rofikagukuw.pdf
    • http://wajoz.mrgraceco.com/uploads/1/3/1/3/131398008/7344692.pdf
    • http://files.piazzasorrento.com/uploads/1/3/0/7/130776567/finunavemid-xojusizunoji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/milejon.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/fukikowewawenuwek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ferenap.pdf
    • https://cdn.shopify.com/s/files/1/0439/2484/8795/files/29690535555.pdf
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/o_silencio_das_aguas_brittainy_c_cherry_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/what_does_crack_smell_like.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/dujolakovipude.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/61039752317.pdf
    • https://cdn.shopify.com/s/files/1/0434/7595/9973/files/applications_of_differentiation_and_integration.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/86825567597.pdf
    • https://cdn.shopify.com/s/files/1/0437/6435/1130/files/chess_master_3d_free_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/biochemistry_and_clinical_pathology_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/vejofobutopesa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/6030265318.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_off00009239.bin
4e3fdaf9fca9ee37339ae4dd73672a7f76a9af05aca752857ab0587c596de522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9239 5584 bytes
font_01_sfnt_off0000a517.bin
c1f983f4645b2b3c30ef6788101095e3919d8489316d6468eb6e89a5e96df8a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA517 10748 bytes

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