Malicious PDF — malware analysis report

Static analysis result for SHA-256 8884008f230e47d2…

MALICIOUS

PDF

46.0 KB Created: 2020-07-30 12:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 895bfa899280abe6e4baf594d4bfb75f SHA-1: 5ca5825f5c0a86103d2cdbdff56aa5be9f212f24 SHA-256: 8884008f230e47d2857d04f6d2d71d926296afe51898d2c790e16f05dd33842b
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to appear as a download for an 'apqp manual 4th edition pdf free download'. This indicates a phishing or scam attempt, likely using a spearphishing attachment vector. 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.ru/pify?keyword=apqp+manual+4th+edition+pdf+free+download
    • http://files.castlemountaindaycare.com/uploads/1/3/0/8/130814076/rabuzimimajilod_wisexukulajon_dififij.pdf
    • http://files.anotheroctave.org/uploads/1/3/0/8/130874210/838342.pdf
    • http://files.scotdancenz.co.nz/uploads/1/3/2/7/132740536/1021111.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4916/4693/files/kozuxifidefokikokaxijof.pdf
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/pomoximi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/vetovota.pdf
    • https://cdn.shopify.com/s/files/1/0433/7238/0310/files/boruteti.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/89478385559.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/wogagedasurowiso.pdf
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/81025882864.pdf
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/xegofisola.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/27283435621.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/xojutafobikujibip.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_off00007766.bin
a0929924bbe88b24f24d28b97ae3243783e29b3c8f91cc3ccd840688f59b9eaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7766 5280 bytes
font_01_sfnt_off00008933.bin
2243912bca0538c6bc133bf92ef90cad0dc65ce8ebf1a4aa6da714053b014ad1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8933 9844 bytes