Malicious PDF — malware analysis report

Static analysis result for SHA-256 e92cd3a4a5eadfa6…

MALICIOUS

PDF

42.6 KB Created: 2020-08-21 21:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbbec9072a3f1fd8ca1cb96ca5fce0b9 SHA-1: ed7c04155173f5126a3d0b9e08daf848b584625f SHA-256: e92cd3a4a5eadfa6dd6f634117b48c5f8b6fd8a682d6b9b2212747851115a0bb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.001 Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF document contains a lure for a 'plagiarism checker' which, upon clicking, redirects to malicious infrastructure via ttraff.com. The document also functions as a link farm, pointing to numerous PDF files hosted on Shopify and other domains. The presence of a remote-support tool lure suggests a potential for further compromise or information gathering.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=plagiarism+checker+online+free+with+report
    • http://files.paintingdecoratingharrow.co.uk/uploads/1/3/2/6/132695325/3126085.pdf
    • http://files.carolinarunningcompany.com/uploads/1/3/2/6/132695352/sidefupazoloderi.pdf
    • http://mitejili.prcawa.com/uploads/1/3/0/7/130776699/6528032.pdf
    • http://files.outofthedarknessministry.com/uploads/1/3/0/7/130775750/dapozaludukijeb_jisagejej.pdf
    • http://files.hasarchitecture.com/uploads/1/3/1/4/131437864/b7f29e7a24ec80.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/91908613376.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/45672719737.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/riwawikabijutirurenin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/72926969317.pdf
    • https://cdn.shopify.com/s/files/1/0438/8320/0680/files/68982626497.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/lavogejilerozebadelu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/sanot.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/xefamezidi.pdf
    • https://cdn.shopify.com/s/files/1/0447/1816/2074/files/download_bacaan_asmaul_husna.pdf
    • https://cdn.shopify.com/s/files/1/0440/4019/2150/files/typing-_speed-_test._aoeu._eu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7308/4319/files/tinkers_construct_duritae.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_off0000688e.bin
6286ee267c3d950158246f1f4c0633f56bdce06a3ef7ec6631e77ea97e0d48dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x688E 5588 bytes
font_01_sfnt_off00007b75.bin
f7c3c20190ac6c834d199af450b393b50a43cc7bcc9a6849090b4dfaea34128f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B75 9896 bytes