Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d12114170d92929…

MALICIOUS

PDF

40.3 KB Created: 2020-08-21 05:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a4abee234401643bd9248afcd2783fd SHA-1: 080da9a8a119752bad71c3000c3cdedd9f779865 SHA-256: 6d12114170d92929f501a723cec46a509762d954aafb56145bf3680347989634
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=cake+packaging+design+templates`. The document body, though heavily obfuscated, contains this same URL, indicating a likely attempt to lure users to malicious content under the guise of design templates.

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.cc/pify?keyword=cake+packaging+design+templates
    • http://files.vincesarrows.com/uploads/1/3/1/4/131409037/7359827.pdf
    • http://nusovi.artofbriannakenney.com/uploads/1/3/0/7/130739024/gugagiluken.pdf
    • http://files.villagevoiceschoir.net/uploads/1/3/0/7/130739062/6223390.pdf
    • http://tuvifana.kozal.net/uploads/1/3/1/1/131164250/kumiselevepesod.pdf
    • http://lazuw.hypnosisdubai.com/uploads/1/3/0/9/130969858/gasurivabogi-pedabenojerowo-zonaviwidiweged-zorerizu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/fipakazirifi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/tugixigojutimufanidusubon.pdf
    • https://cdn.shopify.com/s/files/1/0432/2715/2539/files/art_history_portable_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/mifajerutuwipuzade.pdf
    • https://cdn.shopify.com/s/files/1/0444/0604/6886/files/ge_advantium_120_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7439/6058/files/6531613255.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/zudulopovuvute.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/php_sqlite_example.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/business_plan_cover_page_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/22220591232.pdf
    • https://cdn.shopify.com/s/files/1/0428/4094/8903/files/49063471204.pdf
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/bixasikuxadivazafonob.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_off00005e4e.bin
2d0ed713a347ad5acd1bd50c5bb109bd9abc169eff799ecdddb2b5e8ab6bc3a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4E 5268 bytes
font_01_sfnt_off0000702a.bin
338fddd7a335b928ff150b7686453fd192599ef0ea6d79288a3066bfc3f0b364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x702A 11116 bytes

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