Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2615f7522bb4f6…

MALICIOUS

PDF

35.9 KB Created: 2020-08-17 08:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c02cd67dbfee08000a0483b0bef50507 SHA-1: 92d6d5b9fd8d1e8cf28d8e491eba4a60e8061287 SHA-256: ac2615f7522bb4f6ee228692ea0fe77b2869b5bb781839049056a68e4cc1ffba
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.cc. This suggests a phishing or malware distribution attempt disguised as a document. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating the primary intent is to lead the user to malicious infrastructure.

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=electroforesis+en+acetato+de+celulosa+pdf
    • http://files.ashleykelley.com/uploads/1/3/1/1/131164310/6abd94783.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7249/files/fusutopolejuli.pdf
    • https://cdn.shopify.com/s/files/1/0437/6117/2631/files/44918822240.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5558/files/past_simple_exercises_easy.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/zubun.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/adjective_worksheet_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/78476923655.pdf
    • https://cdn.shopify.com/s/files/1/0435/5974/7745/files/39360278735.pdf
    • https://cdn.shopify.com/s/files/1/0429/1215/3766/files/wunalijizabinero.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5667/files/aruba_controller_7005_firmware.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/sudejuxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4539/5359/files/55293280049.pdf
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/mumujulidipigubo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1733/8005/files/wow_classic_dismount_macro.pdf
    • https://cdn.shopify.com/s/files/1/0430/9113/2567/files/princess_aurora_story.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_off00004f41.bin
f3da32caa6875cc5f477062ad1952e0638c5acc46ec7cc792fc785480eddff00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F41 5108 bytes
font_01_sfnt_off000060a7.bin
0bc1d72d2332756a25a469973f5baa5a3297206c0d0ddca33bf709593a61de66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 10452 bytes

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