Malicious PDF — malware analysis report

Static analysis result for SHA-256 0def543ae1df1825…

MALICIOUS

PDF

49.1 KB Created: 2020-08-24 00:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34a52d86be41fe51df4f29b5e51781c1 SHA-1: eb0f84b2d9528e90ba84dcd6ed9f16bab2e5f0b7 SHA-256: 0def543ae1df1825b67915c0507bbecc1374d99a4a82b889f7f8542297ae0344
162 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector to 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to 'invitation templates in marathi'. The presence of a large number of external PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=invitation+templates+in+marathi
    • http://files.rnfotography.com/uploads/1/3/1/4/131453540/2968482.pdf
    • http://files.narrowgatec.com/uploads/1/3/0/7/130776575/jutulogufaw.pdf
    • http://lunadogex.loganfootball.com/uploads/1/3/2/6/132682663/87dd9752f245f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/hinkley_point_c_pre_construction_safety_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/ruvuniga.pdf
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/nvidia_jetson_tx2_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6366/5055/files/vidyalankar_school_of_information_technology_mumbai_maharashtra.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/big_data_technologies_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/throwing_up_emoticons.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/21329158761.pdf
    • https://cdn.shopify.com/s/files/1/0463/2861/0971/files/65348346973.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/20837790770.pdf
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/tuwuleri.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/jesupu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2310/4162/files/62019797141.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/mizigebikologogodovot.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/15654569109.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/wekovadenetunoxejipejaze.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e5d.bin
d152e8edf9d263a371a630110c9ee5040ddcdb7f10904beb373f237f22121a9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D 5056 bytes
font_01_sfnt_off00006f61.bin
e02425450982f987ab3a808ce2ab15daa9a8ac11fec78571b1cdce96103939d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F61 10260 bytes
font_02_sfnt_off000092bd.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92BD 16164 bytes
font_03_sfnt_off0000a810.bin
5137a34033051e72a8a8fba978d2b7ec1cb8dfd18322b410976108bffebf747b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA810 3780 bytes

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