Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4b451d5e775ba9…

MALICIOUS

PDF

41.5 KB Created: 2020-08-16 23:40:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e96c14ef9fcea689ec14b1c846d3595 SHA-1: ab9fd218bdb9f6debc3e346f979096a7bf498569 SHA-256: cc4b451d5e775ba94d68b703a26d47bf6f6dd6a272b2e355b9ec4839cd14ca0c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body contains a URL that points to a known malicious redirector, which is likely intended to lure users into clicking on it. The presence of numerous external links, many hosted on Shopify, suggests an attempt to obscure the final malicious destination or to leverage legitimate platforms for hosting.

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.cc/pify?keyword=whatsapp+video+gana++hd
    • http://dejebi.riverlureskayaking.com/uploads/1/3/2/6/132683328/400327f.pdf
    • http://duwakebu.peservicesmn.com/uploads/1/3/1/8/131871721/zabejurifoboziw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/blanefield_house.pdf
    • https://cdn.shopify.com/s/files/1/0430/5390/8117/files/teguje.pdf
    • https://cdn.shopify.com/s/files/1/0435/8724/0093/files/lifanuxobalip.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8483/files/zijigejabadekaze.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/vonutanixiti.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/java_tictactoe_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/wuzopananozijasufonobe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8472/files/13474804133.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2560/files/examples_of_cognitive_behavioral_therapy_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0117/files/pafomebogijinibeveka.pdf
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/buxefujirijepesenaxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/xijojexijuw.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_off00005853.bin
c47317d8ede26f42ce65a84b0a1ade8689a9fa6eb338a55a4c03e8d6336b5de8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5853 4952 bytes
font_01_sfnt_off00006938.bin
1c22b5e4e432f4a997e1961292ec38c0734bd8e940dd7022d10c526ab787e4a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6938 9960 bytes
font_02_sfnt_off00008b44.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B44 4324 bytes

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