Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0027e73d0919d16…

MALICIOUS

PDF

36.5 KB Created: 2020-08-03 16:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6048862efab586e35b23d4a04506fc5c SHA-1: feef14180226cee59298a42b2c6d1ad8ff669f7a SHA-256: e0027e73d0919d16b0b9e887ad82c07444dd603cbc0c43b79df09643301bb1dd
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass external link farm, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=adjective+pronoun+exercise+pdf, which is likely intended to redirect the user to a malicious site. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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.
  • 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
  • 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=adjective+pronoun+exercise+pdf
    • http://files.myheartmystate.com/uploads/1/3/1/4/131453256/davuwom-kozojejoxon-busut-kanok.pdf
    • http://files.foxylockshairextensionsaustralia.com/uploads/1/3/2/7/132740805/wosafubow.pdf
    • http://mixikuge.chrysalisbody.com/uploads/1/3/0/8/130814788/3667744.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/25279789094.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/petomovomikavet.pdf
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/10946529295.pdf
    • https://cdn.shopify.com/s/files/1/0428/6133/0591/files/xobifiwufin.pdf
    • https://cdn.shopify.com/s/files/1/0433/9426/9333/files/basanipobimoted.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/35050726719.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4933/files/77127944094.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/72838026008.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4013/files/sumilixetupa.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/gibetufakimomojot.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bcf.bin
3168dc9f048a16ec8793d1fc7659b700a037786a13d8f451982f416a5d64148f
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCF 5100 bytes
font_01_sfnt_off00005d51.bin
607c33c091dc891e9457ef5ad101c43415ba6b653fae9de6a551e5a769410426
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D51 12404 bytes