Malicious PDF — malware analysis report

Static analysis result for SHA-256 d78adf68fa650e10…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 07:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59c20f375972ccc3f2d268d3bafdae76 SHA-1: 62f155b4a81d55fad0de23d43b3c75a010e56420 SHA-256: d78adf68fa650e10efce1f19149f31b7bc8480e65f70fcb4e8e87b813939656b
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure impersonating a document signing service, directing the user to click a link. The embedded link `https://ttraff.cc/pify?keyword=pdf+reader+app+ipad+highlight` is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, including one hosted on `cdn.shopify.com`. No scripts were extracted, but the presence of a malicious redirector and the impersonation lure strongly suggest a phishing or malware delivery attempt.

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.
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
  • 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=pdf+reader+app+ipad+highlight
    • http://files.lwvchampaigncounty.org/uploads/1/3/1/6/131637136/379b7a35a71.pdf
    • http://files.perfectlayout.co.uk/uploads/1/3/1/3/131398547/7466934.pdf
    • http://files.antondelgado.com/uploads/1/3/2/7/132710748/4301430.pdf
    • http://files.18crossroad.net/uploads/1/3/1/6/131637325/kifezuko.pdf
    • http://files.surreyhillsmusicfestival.com/uploads/1/3/1/4/131408209/3741738.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/tedujonuzapuvitar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/42050550547.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/jeretilemume.pdf
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/87609567358.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/francis_dk_ching_building_construction_illustrated_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/dupeve.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/battleeye_initialization_failed.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/86801414102.pdf
    • https://cdn.shopify.com/s/files/1/0433/4744/3865/files/active_learning_spaces.pdf
    • https://cdn.shopify.com/s/files/1/0440/3603/0629/files/jinafogubowutexibikonud.pdf
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/rinadiwamokesuba.pdf
    • https://cdn.shopify.com/s/files/1/0436/2128/6050/files/59830845534.pdf
    • https://cdn.shopify.com/s/files/1/0433/7542/7735/files/mafusadoxaxulas.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/goxuwofukamobebitolejuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/6616/9246/files/godasafup.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_off000067e7.bin
fd3216dd8f84aff4e97fc09b178d09dd8a1a75535b194044a7451ed454780748		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E7 5128 bytes
font_01_sfnt_off0000795d.bin
ba1319a703c7deb0d8cc02a8dade7b8156f7634d2ae69e6188c7692e06a17480		 pdf-font-stream PDF embedded font (sfnt) at offset 0x795D 10136 bytes

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