Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed0bfbc40caafc9…

MALICIOUS

PDF

45.9 KB Created: 2020-08-30 11:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a25282d9ee30794e22985d696b7673e7 SHA-1: a9ecaa3c5d1fee184ce39312577c64300462da11 SHA-256: 4ed0bfbc40caafc95b7ed1a638615e175a560b7aabd6b152198914b8e48ca18f
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a download button, which is a common lure for phishing or malware delivery. The document body, though heavily obfuscated, contains the same malicious URL. The PDF also contains a large number of external links, suggesting a link farm for SEO manipulation or to obscure the primary malicious destination.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=logical+reasoning+test+with+answers+free
    • https://static.usrfiles.com/ugd/7ea8bb_013c730d553148c284d2d310056382a5.pdf
    • https://static.usrfiles.com/ugd/5b604d_1dc298d0da7e485bacb8e64fd078f346.pdf
    • https://static.usrfiles.com/ugd/b8c837_1618bc6236ca4306a541ea1d456f577a.pdf
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/25470208061.pdf
    • https://cdn.shopify.com/s/files/1/0430/6957/1233/files/58313841847.pdf
    • https://cdn.shopify.com/s/files/1/0440/7758/0453/files/alister_mcgrath_christian_theology_an_introduction.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3952/files/mixet.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/tumufiwipovojigek.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/vibovubuwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8280/8472/files/bisibomerekemaga.pdf
    • https://cdn.shopify.com/s/files/1/0435/6639/9647/files/2567419725.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/xafum.pdf
    • https://cdn.shopify.com/s/files/1/0438/9027/8568/files/conveyor_side_guide_rail_clamp.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_off000068bb.bin
6c53771afb8db38f5066bf6dce61adca18a3e7a6647ad2a1f55e917ce410a6ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68BB 4964 bytes
font_01_sfnt_off0000799f.bin
93a4806d119ef28460967799d84d0d9c3ff913fbce190569eb4ec5f0f99cdc59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799F 10288 bytes
font_02_sfnt_off00009cc2.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC2 4324 bytes

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