Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de12011bac39fc1…

MALICIOUS

PDF

48.6 KB Created: 2020-08-21 10:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de2dba697875a9b121fa347f21d3a73b SHA-1: ea2352771444815bb1211d1bee575cf8039fd7be SHA-256: 6de12011bac39fc18294c8b1eaac358525349717d25e6922c9fa807adf153bc5
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=ba+pass+full+movie', indicating a likely attempt to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=ba+pass+full+movie
    • http://files.athenskarate.com/uploads/1/3/1/8/131856949/db01c491078e8.pdf
    • http://rubaguzut.yassermusa.com/uploads/1/3/0/8/130813528/vogawotone.pdf
    • http://files.caughtphotography.info/uploads/1/3/1/4/131409755/6bf8209a5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/tifulo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5004/files/kedokavogilasepapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdf
    • https://cdn.shopify.com/s/files/1/0439/9602/0894/files/fapajegesamigi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/tigoperebolalipabivogep.pdf
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/sleeve_gastrectomy_diet.pdf
    • https://cdn.shopify.com/s/files/1/0430/9116/5333/files/zunetojifamubes.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5744/files/dafupesaridev.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/positive_comments_for_school_reports.pdf
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/breakthrough_plus_2nd_edition_level_4_student_s_book.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_off00005e50.bin
f1c817e24a18a1d3bec13da81b4dfc6477b90c534d061be127706b0b70b86dd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E50 4756 bytes
font_01_sfnt_off00006e89.bin
28cd840c89ba3a76fe4215a92030dcf515ddc4de450ba0b4a15137d8a509cfb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E89 10308 bytes
font_02_sfnt_off0000920c.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x920C 16164 bytes
font_03_sfnt_off0000a725.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA725 4324 bytes

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