Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fde40f2e82b5002…

MALICIOUS

PDF

37.3 KB Created: 2020-08-21 19:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 464a09648c627ac5ce72400b57f01a74 SHA-1: 5c627ab83891d63b5cef2a1d6d961d04fe50ba00 SHA-256: 4fde40f2e82b500257ba9f443a865535458d22c87a7f48f50c5450765cffb292
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as sheet music. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely as part of a link farm to improve search engine ranking for malicious content. The primary malicious link is https://ttraff.com/pify?keyword=lully+lullay+sheet+music, which is presented to the user.

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.com/pify?keyword=lully+lullay+sheet+music
    • http://files.argumentationtoolkit.org/uploads/1/3/0/7/130739396/xoruboj-xutodin.pdf
    • http://files.just-abit-off.com/uploads/1/3/0/7/130775607/desomo.pdf
    • http://pasifaga.understandingfantasybaseball.com/uploads/1/3/1/1/131164250/nubixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7550/9155/files/gosilofu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/vavaxegujuxenepepatav.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/75069646126.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8564/files/affirmative_negative_interrogative.pdf
    • https://cdn.shopify.com/s/files/1/0449/9764/0360/files/roman_catholic_bible_tagalog_version.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/github_gist_api.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/best_company_profile_presentation_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/61671208369.pdf
    • https://cdn.shopify.com/s/files/1/0429/4787/0876/files/vorizeravigamixapomozufu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/daraxagulexidetipaxuban.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_off000055e4.bin
d80c81d52d1b9801f72a807a9a17310333ce77e691bb3dfbae400062a0342d7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E4 4984 bytes
font_01_sfnt_off000066b8.bin
32538048d41f86eada788abee0fcf102c3c8ccd1f54bc204cafe4a3a55cd3b7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B8 9904 bytes

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