Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5c44fdbb802e97…

MALICIOUS

PDF

43.1 KB Created: 2020-08-09 00:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61b8c8a3bac6bb47a0e9ae30bdf41254 SHA-1: 6ba50271f52914dcc2b9564e9a854cf0198fe7cc SHA-256: ff5c44fdbb802e973981c831f354ab575657d2c0ab6bf29182c31ce606f69ea0
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'histrionic personality disorder journal pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of numerous external PDF links points to a link farm strategy to improve search engine ranking for 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.com/pify?keyword=histrionic+personality+disorder+journal+pdf
    • http://files.iltportfolio.com/uploads/1/3/1/1/131163669/2087069.pdf
    • http://penipalux.gstrackers.org/uploads/1/3/0/7/130739777/sirupagurejujep.pdf
    • http://files.crimeintelanalysis.org/uploads/1/3/2/7/132711947/3329110.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/zamukelidivojitokuda.pdf
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/27259812689.pdf
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/sawami.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/fidofinesalufegelinere.pdf
    • https://cdn.shopify.com/s/files/1/0434/3054/3512/files/febadasebopar.pdf
    • https://cdn.shopify.com/s/files/1/0436/0906/3582/files/bukotenudakowopoza.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/64014352586.pdf
    • https://cdn.shopify.com/s/files/1/0440/8632/9509/files/doena_addison.pdf
    • https://cdn.shopify.com/s/files/1/0434/3549/1490/files/wamip.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/ambition_in_macbeth.pdf
    • https://cdn.shopify.com/s/files/1/0433/8325/9285/files/44393126810.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_off000065ea.bin
c79db1ac30daba1cbd15d92758b7b112aac0deb16218d85f559c006c3b72dd47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 5288 bytes
font_01_sfnt_off00007803.bin
c6bd3bc1e03db4057596036e1235abfbd44a6aad26e2c9b9fe6cf992549c7915		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7803 12372 bytes

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