Malicious PDF — malware analysis report

Static analysis result for SHA-256 063ea2a481128cb3…

MALICIOUS

PDF

34.1 KB Created: 2020-08-28 07:51:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1a6cec6553b63471c057313eb09a3fd SHA-1: a3d62b60c440bdf7e27095527be7f510eef42ab9 SHA-256: 063ea2a481128cb31f1509ba15a23517fdcfeefca898d81418e6587f3e890908
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, ttraff.com, which is designed to lead users to potentially harmful content. The document body also contains numerous links to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirect. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is part of a malicious campaign.

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.com/pify?keyword=punch+trump+simulator+unblocked
    • http://files.revdanielgregoire.com/uploads/1/3/1/3/131398308/1598345.pdf
    • http://mutodo.bellcitymotorworks.ca/uploads/1/3/1/1/131163930/9825654.pdf
    • http://files.overlordtattoo.com/uploads/1/3/0/7/130738652/verurerabutixusake.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/6572/7384/files/xasawufu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/wuvagimolof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0433/9043/5495/files/herbert_blumer_symbolic_interactionism.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/certified_paralegal_review_manual_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/7834/4085/files/81314307761.pdf
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/vukagolofomewesubod.pdf
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/the_creative_teaching_and_learning_resource_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/xozav.pdf
    • https://cdn.shopify.com/s/files/1/0445/1729/4239/files/womerose.pdf
    • https://cdn.shopify.com/s/files/1/0432/4432/2978/files/49988046078.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0507/files/ativar_modo_noturno_instagram_android_7.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_off00004810.bin
37d7c6c063589d4337015d6105df4120784aadcff2ca23e21776e142b2cb4c9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4810 5516 bytes
font_01_sfnt_off00005a8c.bin
bc3f719b9651c8b95f5a4481affb325df28f800c5ece8cb35f0a980cc163661c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8C 9732 bytes

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