Malicious PDF — malware analysis report

Static analysis result for SHA-256 557818aa17966984…

MALICIOUS

PDF

43.5 KB Created: 2020-08-22 05:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41df75628edd683df6c8dcf41e016e6d SHA-1: 508813c51536589d4479242699cf22420470804f SHA-256: 557818aa179669847cb6cc9be7d7b8931a28871f38c7e6649a1fa374fbf00e59
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. This suggests a link farm or SEO poisoning attack designed to direct users to malicious sites. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is driven by the embedded URLs. No scripts were extracted from this sample.

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.ru/pify?keyword=and1+mixtape+soundtrack
    • http://keweti.neelin.net/uploads/1/3/1/0/131070993/lakipokame.pdf
    • http://files.aranyaniyoga.com/uploads/1/3/1/3/131384663/kilutuvosemunez-zotukuwerin.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/1st_grade_math_addition_and_subtraction_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/19492926301.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/tokupajazel.pdf
    • https://cdn.shopify.com/s/files/1/0438/8726/3899/files/balance_checkbook_excel_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8281/files/xulobipodujonase.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/gupepugebiwalaxesujixulam.pdf
    • https://cdn.shopify.com/s/files/1/0432/6244/3675/files/vscode_portable_version.pdf
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/platform_number_for_59550.pdf
    • https://cdn.shopify.com/s/files/1/0435/6508/8936/files/nologefejufolapipofodan.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_off00006b08.bin
7235bf739cff26c83d6cccb7971a896dda918616b88108f15ba8db36065d2b13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B08 5360 bytes
font_01_sfnt_off00007d2d.bin
d117f7dedf1a1b96f9518bdc047e53678be068ca311bd0818afe7aec37156e1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2D 10232 bytes

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