Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf9c4a46eaa86f76…

MALICIOUS

PDF

48.4 KB Created: 2020-08-31 23:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76e7ae0344dccf304365e57bd92e9950 SHA-1: 8c46a0aed34695a491f0b1a1a68f7c0208c630a5 SHA-256: cf9c4a46eaa86f76b5a3fe798bcc45b5cbb9fc8958f853b93c13198344f82223
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'adobe photoshop' and a URL that mirrors the malicious redirector. This suggests a social engineering attempt to trick users into downloading potentially malicious software or visiting harmful sites.

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/wix?keyword=adobe+photoshop+7.+0+software+free++filehippo
    • https://cdn.shopify.com/s/files/1/0432/3619/6507/files/answer_key_applied_auditing_cabrera.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/ffxiv_unidentifiable_bone.pdf
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/28779114769.pdf
    • https://static.usrfiles.com/ugd/ddb60a_5fc1fc952c3b4c6fb55109598130acfa.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_762c6b81fe55475e8c21079cfa06bbcd.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a1780045542495b8c96f23f002f05d3.pdf
    • https://static.usrfiles.com/ugd/61f964_8a9af8471646429abbefe5da1ee5dd11.pdf
    • https://static.usrfiles.com/ugd/26481d_1ee7e39f48f24d4ab736b09a1ce54da4.pdf
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/ramezidig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/guideline_stemi_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/html_to_angular_example.pdf
    • https://cdn.shopify.com/s/files/1/0438/1242/1789/files/apache_spark_scala_interview_questions_shyam_mallesh_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/active_directory_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/belaxanun.pdf
    • https://cdn.shopify.com/s/files/1/0434/5066/3062/files/medobalifonomevofolu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/36366726257.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060c6.bin
019d633a407e6abba7fa281df5b93e9304b96ac8dcaedc40e146a7b503156b48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C6 5288 bytes
font_01_sfnt_off000072e4.bin
488ffee5e9c33bcc1f3f00aec749f35977d0cdd209ffadaee35194d66ecc177d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 6148 bytes
font_02_sfnt_off000082c4.bin
2760b668abf029a9c1e43c1441f8a4d7f38409d6db93d931559b6dd2a54b4158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C4 10308 bytes
font_03_sfnt_off0000a5f8.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5F8 4324 bytes

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