Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf748f613ecaf07…

MALICIOUS

PDF

73.2 KB Created: 2020-09-01 01:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f666b9b33cf5718abe58df9d674e725 SHA-1: 4e4c6bdfc4d4f7259a38b696eed63ecedfb7f570 SHA-256: ebf748f613ecaf0749a7a51e3d7e5af2d4708956f9cebdc0cfd67364e21820b4
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the string 'chamakam meaning pdf' and the URL 'https://ttraff.cc/wix?keyword=chamakam+meaning+pdf', suggesting a lure to a malicious site. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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/wix?keyword=chamakam+meaning+pdf
    • https://cdn.shopify.com/s/files/1/0462/8971/5361/files/79331760916.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2903/files/53016306213.pdf
    • https://cdn.shopify.com/s/files/1/0432/9321/2827/files/mupofori.pdf
    • https://static.usrfiles.com/ugd/b8c837_3cba043c14bd4ee79519e9e6063bc1b0.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/73603757019.pdf
    • https://cdn.shopify.com/s/files/1/0436/0876/8675/files/dodulorokoveniritirel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2455/files/iso_iec_17025_quality_manual.pdf
    • https://static.usrfiles.com/ugd/4c76bf_515671a8fe6b40d89b622caff50a35d7.pdf
    • https://static.usrfiles.com/ugd/b7082a_e0e2fab8c6c7446c801aacba0a6e8c1c.pdf
    • https://static.usrfiles.com/ugd/5ed537_1034e9eca94d4ac39547497588a7666c.pdf
    • https://static.usrfiles.com/ugd/1ee69b_37bd182f8b254d5ebb78e7bb4f08610b.pdf
    • https://static.usrfiles.com/ugd/3aca14_ea1f46fea1c2416eac9412292d16e1f2.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/
    • https://cdn.shopify.com/s/files/1/0430/6580/29

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c580.bin
48af5cf5be0a182810d8b6a4264796af049b6150741830410b2e587d2de9986a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC580 5116 bytes
font_01_sfnt_off0000d6c9.bin
3d181de8bf5ee40b4a544192b17ceac8cf02011ce6d7a778d969340290d6fdb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C9 10104 bytes
font_02_sfnt_off0000f9aa.bin
863dcc058e4448c65ba44ad34951ecb936c91014b2e2f54bc2c00176e66f3351		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AA 9032 bytes

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