Malicious PDF — malware analysis report

Static analysis result for SHA-256 3832b18c7bd35b2f…

MALICIOUS

PDF

44.2 KB Created: 2020-09-09 09:37:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8791658ee430f2058167c6d59704a01b SHA-1: ff41fc402a88d2d9409c5b21276588ff64efadea SHA-256: 3832b18c7bd35b2f9430ec7f593f31764a63073170d07d8b6f78a6cbc425196e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=pdf+of+candlestick+chart+pattern'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0438/3762/0386/files/winrar_free_for_pc.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to disguise malicious activity as legitimate 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.club/wix?keyword=pdf+of+candlestick+chart+pattern
    • https://cdn.shopify.com/s/files/1/0438/3762/0386/files/winrar_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/96077661324.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1269/files/58248262672.pdf
    • https://cdn.shopify.com/s/files/1/0428/3986/7559/files/the_thrill_is_gone_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78682713185.pdf
    • https://static.usrfiles.com/ugd/4c7633_588b052bb5cf4dcb8b41dabef3e8841b.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_4203f9bd10464ee389438e2a1a1b0c68.pdf
    • https://static.usrfiles.com/ugd/008e52_4c3ed7fe55ff4f4d9613a0ddb4038919.pdf
    • https://static.usrfiles.com/ugd/b97cba_df30ad945e9e40e888ba9166252c0ff3.pdf
    • https://static.usrfiles.com/ugd/338562_3e2e6ea31682482e9e7c814d4ba99113.pdf
    • https://static.usrfiles.com/ugd/f08e01_9fd4f0f328794ae7826282d8a34e7575.pdf
    • https://static.usrfiles.com/ugd/cb2bed_d38d8c6f06ad4ff48bca99f5b61877db.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_2b0e9baabf7343bb86d03dcf123bcc53.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/juraxejaxivelewelolemo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/50935747240.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_off00006dd2.bin
9659ff1859124228c9005402eb87c69afb65ab27d635c9b924c5fa2c25cecb5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD2 5308 bytes
font_01_sfnt_off00007fdd.bin
43a11c4c8dce4fdded9a4bb5663343f022818889b452f38531ada201c462b9f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDD 10620 bytes

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