Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7483948c1f67de8…

MALICIOUS

PDF

42.4 KB Created: 2020-08-14 05:50:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5216e909c0de1df7d1aba64e82d417f1 SHA-1: e3c1082e46d732b79269e7e4d7cc774fb5201e3e SHA-256: b7483948c1f67de8e9bb0ce7481dafafddb1552341eb706c73b1f1f9af6878e4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=gout+guideline+2012'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on shopify.com. The document body, though heavily obfuscated, also contains the malicious redirector URL. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for phishing or to download further malware.

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=gout+guideline+2012
    • http://files.manysizesfitall.com/uploads/1/3/2/6/132696483/vupetub.pdf
    • http://files.2210enterprisedrive.com/uploads/1/3/2/6/132695569/9912773.pdf
    • http://files.thegrassyknollfarm.com/uploads/1/3/2/7/132712315/tukegiduzuride-vuwoxarabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/58504077136.pdf
    • https://cdn.shopify.com/s/files/1/0440/7227/2037/files/audit_report_of_reliance_industries_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/pewepive.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/form_cms_1763.pdf
    • https://cdn.shopify.com/s/files/1/0440/0644/1110/files/pimsleur_french.pdf
    • https://cdn.shopify.com/s/files/1/0434/7494/4153/files/40476332265.pdf
    • https://cdn.shopify.com/s/files/1/0431/7344/5788/files/xufekewopet.pdf
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/madidufegawumolekezujorib.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5878/files/cebada_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/govukerigomurode.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4080/files/pancreas_endocrino_fisiologia.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_off00006792.bin
e123a7fc40f5239cd7a26eb4b2835c9bfbf3673f4d49c1a17836e72be92d683f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6792 4868 bytes
font_01_sfnt_off00007840.bin
add55a64f76528ccfbbc17e97d45ffc009bd1013860e91f85c202cbd92aaa952		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7840 10856 bytes

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