Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2af98736eaa5e5…

MALICIOUS

PDF

34.2 KB Created: 2020-09-19 01:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 709ee4f6af7baae545638261b4aaf8da SHA-1: 97f56eacf8f13a26f83708ab0e1958be2e415e8a SHA-256: 1e2af98736eaa5e5e334d33b78fdf31b767b021f97c4171c92f6f791b01768c9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to malicious websites. One of the primary links points to a known malicious redirector. The document body, though heavily obfuscated, contains references to the URLs, suggesting an attempt to disguise the malicious intent with seemingly legitimate content. 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.club/wix?keyword=fractional+equations+worksheet+pdf
    • http://bogokuk.littlete.com/uploads/1/3/2/7/132711981/4119115.pdf
    • http://files.shamblinstone.com/uploads/1/3/1/4/131437246/273228.pdf
    • http://zarufenu.debbiesangelsproductions.com/uploads/1/3/1/4/131453206/7729057.pdf
    • http://vusirugo.kariemsaleh.de/uploads/1/3/0/9/130969723/610f185.pdf
    • http://files.rivercityfoursquarechurch.com/uploads/1/3/0/7/130739719/70face.pdf
    • http://files.heywoodracing.com/uploads/1/3/1/6/131636855/wazizabimepogemi.pdf
    • http://files.okmiataclub.com/uploads/1/3/1/4/131437823/nosegipekusi_nomupiz_vuzokarolir.pdf
    • http://files.vvphotography.ca/uploads/1/3/1/4/131453615/c526b2c7938.pdf
    • http://fugagi.greypartners.com/uploads/1/3/1/8/131857920/figejuwujag_rikufew.pdf
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/fifulorafusezit.pdf
    • https://cdn.shopify.com/s/files/1/0437/7640/9751/files/facts_on_why_school_uniforms_are_bad.pdf
    • https://cdn.shopify.com/s/files/1/0432/5543/1323/files/discrete_mathematics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/nickel_cadmium_battery.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/jagabinur.pdf
    • https://cdn.shopify.com/s/files/1/0429/4888/6684/files/ip_address_classes.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_off000047eb.bin
71794f72309764ad6a96a3c30cf7bed0ad9a9bf06539a03a6cb5fb36782ef98d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47EB 5480 bytes
font_01_sfnt_off00005a9c.bin
8e78f67caf89a92cfbd5aa88c77c47f3801e5284d45b68a5d0279eb7756fd89a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9C 9740 bytes

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