Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0f5bf85ac15271…

MALICIOUS

PDF

36.1 KB Created: 2020-09-04 17:22:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6599fc75435aca252294f6e314aafbb7 SHA-1: a555fc4dc487aacae419c225e18c1ca839a62ea2 SHA-256: fd0f5bf85ac1527131843f3e17f806822496a910c8d9c6379de6239c280f7961
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.me/wix?keyword=black+eyed+peas+audio+songs+free'. Another critical heuristic indicates a PDF link farm, with the primary link pointing to 'https://cdn.shopify.com/s/files/1/0436/3019/8937/files/55535443234.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting a lure to drive traffic to malicious infrastructure.

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.me/wix?keyword=black+eyed+peas+audio+songs+free
    • https://cdn.shopify.com/s/files/1/0436/3019/8937/files/55535443234.pdf
    • https://cdn.shopify.com/s/files/1/0432/1961/5904/files/toastmasters_evaluation_form.pdf
    • https://cdn.shopify.com/s/files/1/0443/8884/3686/files/tutepajolitulozapipoge.pdf
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/26301404803.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/angular_tutorial_download.pdf
    • https://static.usrfiles.com/ugd/fac845_0f0fcc0bd6f54520a2dbcfb60f6303a4.pdf
    • https://static.usrfiles.com/ugd/36f25b_dcb6157b28d04be3bab42b309cd365c0.pdf
    • https://static.usrfiles.com/ugd/a44510_f658d57d190549cabb71c35b2b298f9f.pdf
    • https://cdn.shopify.com/s/files/1/0437/4410/0506/files/28151868971.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5592/files/64798145745.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/90371494551.pdf
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/52544894526.pdf
    • https://static.usrfiles.com/ugd/74e905_f0a14fedc2eb4aae8f9edbb25a94c717.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_bfd44bfc2eda4263ae3fad7df4c0971b.pdf
    • https://static.usrfiles.com/ugd/5ed537_86109a729591429ebd61147171179860.pdf
    • https://static.usrfiles.com/ugd/575363_f62907f1540640adab7b4f1967fa72bc.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_off00004d0a.bin
842ccdd750cb3e48ab21b48e44fbfdd1d9ff0071966fbc62c621039e97885b41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D0A 5536 bytes
font_01_sfnt_off0000600d.bin
fcbbb12232d99660b708dcd990d2fdc418225255aa94f85ba444527c0189bcde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600D 10320 bytes

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