Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2d0a362e09e54d…

MALICIOUS

PDF

43.4 KB Created: 2020-09-03 05:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e5ed09acf771fdd1f592a0455e4a505 SHA-1: 5eb0907870fa46f637ea69ab387001d22b0c15d8 SHA-256: 2d2d0a362e09e54d1c302f7e33d5f19adee3c2e1098a46e8b5a672b8a0fd9b41
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=caballo+de+troya+3+saidan+pdf+gratis'. Additionally, a high-severity heuristic indicates the document is designed as a lure for a password-protected archive, a common tactic to bypass gateway security. The document body, though heavily obfuscated, contains the same malicious URL. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=caballo+de+troya+3+saidan+pdf+gratis
    • https://static.usrfiles.com/ugd/3e0cb9_d9dcafb64b9341ac853167502e5b4b5d.pdf
    • https://static.usrfiles.com/ugd/4d400c_6fdbb06114dc4f80a1f662a24e85bfc3.pdf
    • https://static.usrfiles.com/ugd/c88839_6b2336983ceb42e3b961114a3fe06dda.pdf
    • https://static.usrfiles.com/ugd/c068f8_34849a2ce39845ed9f67cab7d66132c4.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/sejaroweraxiwekobiva.pdf
    • https://cdn.shopify.com/s/files/1/0429/1523/3959/files/autoloader_for_blackberry_z30.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/buvivalixafufenomixuveru.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/similar_meaning_words_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/free_depfile_login.pdf
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/xikusaforuzorotokon.pdf
    • https://cdn.shopify.com/s/files/1/0445/6048/2463/files/rifejana.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/briggs_and_stratton_8hp.pdf
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/kexeruwexuja.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/30413903342.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_off00006673.bin
da50daa9ddb442d5e770cb83aa0e3427bd95aaf42f208d1ac5b86b18c972d2bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6673 5520 bytes
font_01_sfnt_off00007947.bin
5d67ee1635399da1849ceaca24cf0db52c173c2a340fb4e4150f9cf15690bb78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7947 11640 bytes

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