Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e96925d17798bf…

MALICIOUS

PDF

48.0 KB Created: 2020-08-09 07:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 917697932a2c7cfd3742e4a58d960efe SHA-1: e9a540c3dce290f978952d4ce4378003ccb6398d SHA-256: 65e96925d17798bf67eecf88610cddcc3b75efcbc79fd06b42a324db499a9c40
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed for SEO manipulation. One prominent URL, https://ttraff.ru/pify?keyword=construction+company+profile+pdf+template, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure under the guise of a company profile template. No scripts were extracted, but the heuristic firings strongly indicate malicious redirection and link farming behavior.

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.ru/pify?keyword=construction+company+profile+pdf+template
    • http://files.andersonolineacademy.com/uploads/1/3/1/6/131637257/gefurozasime.pdf
    • http://files.raajsah.com/uploads/1/3/2/6/132683260/265274.pdf
    • http://files.hudsonjewellery.co.uk/uploads/1/3/1/0/131071289/lijizogiboxi.pdf
    • http://files.henleychocolates.co.uk/uploads/1/3/1/4/131414561/686426.pdf
    • http://boxadurew.ladiesofhiphopfestival.com/uploads/1/3/0/8/130874524/pasotivulunepon.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/xubenorutorafigufalobazos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36920421444.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/breath_of_the_wild_rock_salt.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/xupodovarujekubitunopaxak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/sumerian_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/doseto.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/nujepajito.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/faringoamigdalitis_bacteriana_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0431/8144/1181/files/79894326044.pdf
    • https://cdn.shopify.com/s/files/1/0430/9529/4109/files/asterios_polyp_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/63421177871.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_off00007d28.bin
e5230789770dc2f2a6392d4482e5b096fa9c895765ac5ef321fc85b852ce4c45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D28 5308 bytes
font_01_sfnt_off00008f26.bin
121560751936a5d462bc0f6ea822e7228dfe430213c48aa7aef59ad9d4b27e6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F26 10352 bytes

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