Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5434c60793b6f9b…

MALICIOUS

PDF

50.3 KB Created: 2020-08-29 18:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51e4fbe4db9a810bdc5e61e4748a307b SHA-1: 3522d5bfa445c9a26641d2b096477de773467d43 SHA-256: c5434c60793b6f9bd448e01543ec1f0bd43f6c2e561f0dbc8f73396f6ae7649f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a malicious redirector, with a specific URL identified as malicious. Additionally, another heuristic indicates a PDF link farm, suggesting an attempt to distribute or redirect to multiple external resources. The document body itself contains obfuscated text and a URL that matches the malicious redirector identified by the heuristics.

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=the+politics+of+jesus
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/vocabulary_words_with_urdu_meaning_and_sentences.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1808/files/95994960279.pdf
    • https://cdn.shopify.com/s/files/1/0431/2743/9526/files/lomiduzabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/82382936231.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8977a81fa1544d79f2289a7fe1f5aff.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddc0630f1c2343548252af4e0678ed85.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a692cca522a4a1e88e249407c9a71d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_31a8c369cba9457ca7d3468049512af9.pdf
    • https://static.usrfiles.com/ugd/6908d7_62a84372472e4e42912f704a0213b03a.pdf
    • https://cdn.shopify.com/s/files/1/0437/6284/3797/files/itextsharp_text.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/mipenulufut.pdf
    • https://cdn.shopify.com/s/files/1/0439/3782/4926/files/27769684933.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/30896732902.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed2ea15a0cd4167ab7d6c4bb16740d8.pdf
    • https://static.usrfiles.com/ugd/87d215_f26a77bd25d94bbb9a0edbcfd53b73e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c00142f31b04f188c99cb799bd37d61.pdf
    • https://static.usrfiles.com/ugd/b8c837_771bd48058614aebab9436fb5aa7caeb.pdf
    • https://static.usrfiles.com/ugd/b8c837_dbb6a38463be41ffaa6cf2362d6daef8.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_off000088f1.bin
09fee5539af9b889fe5f4b8ed05ec5e04df6882a85d6a657d422de9ce2af639a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F1 4820 bytes
font_01_sfnt_off00009960.bin
6efa66af898fd8ed58d23f4ba0098787d358ae7d8fd183158e3492b8a16bec87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9960 10152 bytes

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