Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb49538c5f45e69…

MALICIOUS

PDF

68.5 KB Created: 2020-08-12 11:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fe7d94750525cf168ad341f6cdb934c SHA-1: 2db014e5fdd5539b2a2a67946cc1b8b499f79a1f SHA-256: 2fb49538c5f45e69d554ac145747f82dcb2fdab1c353fb744e9971d5156f9e08
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, with one heuristic specifically identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=camino+frances+map+pdf'. Another heuristic indicates a link farm, suggesting an attempt to manipulate search engine results or distribute content. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. The presence of a malicious redirector strongly suggests this PDF is used for phishing or to deliver further malicious content.

Heuristics 3

  • 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.
  • 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=camino+frances+map+pdf
    • http://files.socialdeterminantslab.org/uploads/1/3/0/8/130873927/81aeccdba457b.pdf
    • http://benomof.nstcricelake.org/uploads/1/3/1/4/131438869/bd4de1cd5acf.pdf
    • http://files.inspiredwithdana.com/uploads/1/3/1/3/131379591/48bd4ab25dae1e0.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/alexander_solzhenitsyn_books.pdf
    • https://cdn.shopify.com/s/files/1/0448/2508/4065/files/xumasa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/antibiotic_guidelines_2020_johns_hopkins.pdf
    • https://cdn.shopify.com/s/files/1/0429/1313/6799/files/vuxotipugodesiweratineko.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/manual_of_office_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/gowotesewusobo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2849/6036/files/74027718900.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2840/files/dukavetumemenalupazatabib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3141/2379/files/nidisapiruzupaxiwux.pdf
    • https://cdn.shopify.com/s/files/1/0430/1130/9719/files/36688257838.pdf
    • https://cdn.shopify.com/s/files/1/0436/7617/2441/files/amenaza_de_parto_pretermino_manejo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1631/3242/files/differential_calculus_joseph_edwards.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cee6.bin
71b7924acc23e2dd8db2e4b2e9ef9298d2aca464ccd3e43eb4c9e431ed3ca4f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE6 5172 bytes
font_01_sfnt_off0000e05f.bin
aa2cab0b1230e0eaec3711876fc2200054698c9786e0b368365fc5cbce1141ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE05F 10720 bytes

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