Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d9c807ba5f3f79…

MALICIOUS

PDF

47.1 KB Created: 2020-08-11 23:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68945c8b0d904587f00088bd9a0ac066 SHA-1: 1346a959a3314cdfcc86a02ec3e876019c3427db SHA-256: c6d9c807ba5f3f79fbf518cee81d9710980efbcccec6e9a7691c797d182168c1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wb?keyword=consolidate%20multiple%20excel%20files%20into%20one%20worksheet'. This indicates a phishing or social engineering attempt to direct the user to a malicious site. The presence of a large number of external PDF links also suggests a link farm, likely for SEO manipulation or to obscure the final malicious destination. No scripts were extracted, but the primary attack vector appears to be the malicious URL embedded within the document.

Heuristics 3

  • 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.
  • 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/wb?keyword=consolidate%20multiple%20excel%20files%20into%20one%20worksheet
    • http://files.neuquacheerleading.com/uploads/1/3/0/8/130814515/pudexapudofewitemom.pdf
    • http://wafofu.libertytorch.org/uploads/1/3/1/6/131637136/nivupaboxefefu-kababobiwamo.pdf
    • http://files.ml-journeys.com/uploads/1/3/1/3/131397946/rugazin-jatixapojex-konosaromiwen.pdf
    • http://vafolum.peterandrewsoam.com/uploads/1/3/2/7/132740930/36e7583a8.pdf
    • http://wafofu.libertytorch.org/uploads/1/3/1/6/131637136/n
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/31094530471.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/melaliwo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/bofowubovutegevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27055139941.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/33659835725.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puxatofutedixa.pdf
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/50168738736.pdf
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/29682176556.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/bankers_adda_computer_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/asimov_cult_of_ignorance.pdf
    • https://cdn.shopify.com/s/files/1/0429/9040/3737/files/kovisigajubozi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b74.bin
92550a43492b7ad38cdf670c6b2f578dae9a5fe137fbc6ddc5dde526a3e07402
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B74 5524 bytes
font_01_sfnt_off00007e28.bin
5e525f4bdf67aed85730d1b949ca6ed726a1bced7df27b8e9a4e6f77f8c317ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E28 10096 bytes
font_02_sfnt_off0000a0a8.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A8 4324 bytes