Malicious PDF — malware analysis report

Static analysis result for SHA-256 284b7588030f9ac8…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 10:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd4c869a798e2bbe0f0460ad35fbd9f6 SHA-1: 0bc5deed3a43165e0b2cbfd53bbf02b3e9b71d16 SHA-256: 284b7588030f9ac891ef195a1ae0f97ec78d354aebf169c9600d083ffcf82138
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a movie title, directing users to a known malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely to lead users to further malicious content or malware downloads. The PDF was flagged by a machine learning model and heuristics indicating malicious redirector links and a link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=watch+seed+of+chucky+full+movie
    • https://static.usrfiles.com/ugd/b8c837_ad319baeaa3f4a14b46fe1e02621a7ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_a786aaf3fd034701b61548af9270c6a4.pdf
    • https://static.usrfiles.com/ugd/cac9e4_44a35c173a7a4c499d6333a8191acff1.pdf
    • https://static.usrfiles.com/ugd/822ecd_4443c21c98a547edb4dbd16e3dc18392.pdf
    • https://static.usrfiles.com/ugd/b8c837_c265cd2fa5f0446194ee900fe6a96c6b.pdf
    • https://cdn.shopify.com/s/files/1/0440/5926/3128/files/teoria_de_liderazgo_situacional.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/gs_ghatna_chakra_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/4223/2725/files/zozovoruxudoriv.pdf
    • https://cdn.shopify.com/s/files/1/0438/9679/9384/files/botanica_plantas_carnivoras.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/42480159768.pdf
    • https://cdn.shopify.com/s/files/1/0433/7834/4085/files/81314307761.pdf
    • https://cdn.shopify.com/s/files/1/0429/0910/6343/files/bridal_march_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/oxford_discover_4_student_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/0976/8604/files/pogijimemuk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005409.bin
9b7f532f80505dc72174740083ca5f51d69f6ae55ad541021ea0d285b565ea49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5409 5180 bytes
font_01_sfnt_off000065c6.bin
e4b1fa951505a12c442e76f39ed5f70967f4fa40b2ca4f3ac55e9aa0a4fad5af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C6 10996 bytes
font_02_sfnt_off00008ae4.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 4324 bytes

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