Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5b968d0133b311…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 21:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43049f372cd93d4b07edbca459880963 SHA-1: b2d31a5585b5e1e9262fdaf7e8225f13cab4fa4f SHA-256: 9e5b968d0133b311876864004be0b0a4e6832252bf1a5e21f8a971f7cc9ac108
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, disguised with a seemingly innocuous keyword, leads to a known malicious domain. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to host malicious 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.cc/pify?keyword=howl+moving+castle+piano+duet+sheet+music
    • http://files.loranzierogers.com/uploads/1/3/1/3/131379312/boluwure-xubisepus.pdf
    • http://bosenuw.schillingtravels.com/uploads/1/3/1/6/131636725/9b2f6edd9d5e.pdf
    • http://sopisirug.yournextapparel.net/uploads/1/3/0/8/130813840/111623.pdf
    • https://cdn.shopify.com/s/files/1/0432/1984/5284/files/basecone_app_en.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/security_deposit_receipt.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4069/files/dikox.pdf
    • https://cdn.shopify.com/s/files/1/0440/1466/5886/files/sisukomuromume.pdf
    • https://cdn.shopify.com/s/files/1/0434/2572/6625/files/98948256673.pdf
    • https://cdn.shopify.com/s/files/1/0431/4306/9858/files/strong_fibrous_tissue_crossword_answer.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4712/files/arabian_nights_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/tajosaxawekuwisal.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0899/files/revatupudenino.pdf
    • https://cdn.shopify.com/s/files/1/0437/8525/7112/files/burda_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5727/files/3135250638.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_off000052c7.bin
ecbdb8bc5a959ad6ddf72e2d74e79fc8d56068c42b6de1a248248e260c455981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C7 3596 bytes
font_01_sfnt_off00005f98.bin
06c42889b17a628c0aaf63cae8ed992f3b4483c84c7445d14ae48da47ab452ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F98 5504 bytes
font_02_sfnt_off0000723a.bin
7c05165c96e95aba7306c32aa63886c8b8332f7658d4c8d3bb26d42a5cdeb188		 pdf-font-stream PDF embedded font (sfnt) at offset 0x723A 9948 bytes

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