Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e46fa0e6fd8bc5c…

MALICIOUS

PDF

52.1 KB Created: 2020-09-04 00:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6768c7ee24ac4dafee41cb9374e9248e SHA-1: 91fd377127012c4456a7dbfdf7f5009a16fa0bbb SHA-256: 2e46fa0e6fd8bc5c91b8fa41aa500bfbab154e357d242a625f68866771d6d218
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL https://ttraff.link/wix?keyword=auto+clicker+apk+no+root+android, which is likely intended to trick users into downloading potentially unwanted or malicious software. The presence of numerous links to static.usrfiles.com and cdn.shopify.com suggests a link farm or SEO poisoning tactic to improve search engine ranking for the lure.

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.link/wix?keyword=auto+clicker+apk+no+root+android
    • https://static.usrfiles.com/ugd/0ad6c7_3db7aba0eb394561bf30bf92f60738f5.pdf
    • https://static.usrfiles.com/ugd/df4650_da7bae4f1fe54d24ba473cf0a666c18e.pdf
    • https://static.usrfiles.com/ugd/61b8bf_4767907bf3564753b8c32dcc50086f23.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6754/files/riviragoxor.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/satexopoxitilelaxav.pdf
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/nojigidabudoberutodo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/chiari_malformation_type_ii.pdf
    • https://cdn.shopify.com/s/files/1/0434/8303/7860/files/tactics_for_toeic_listening_and_reading_test_gratis.pdf
    • https://static.usrfiles.com/ugd/e49726_f58f69b5867c4ab49725b39c390c9886.pdf
    • https://static.usrfiles.com/ugd/3b7182_72885b4bc04d4f95943ce1d20f12bc38.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_off00006b33.bin
edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B33 6440 bytes
font_01_sfnt_off00007b29.bin
9a960d6523ee971c86525477fa1c754ecedc13dfa8390871fb2b94414a4e65ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B29 4940 bytes
font_02_sfnt_off00008c03.bin
713025fd6ed441b3fe60b66488aa3226471fb0259e75ac038779a457c1f43630		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C03 10140 bytes
font_03_sfnt_off0000aee6.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEE6 16036 bytes

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