Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aaecb6016764901…

MALICIOUS

PDF

43.8 KB Created: 2020-08-05 04:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6850cf5391c3d07a819654b21cc33ea8 SHA-1: 38e9928dbfbf0629f25a70e2fb615fbeb126af2d SHA-256: 8aaecb60167649014da640cc9fa5e9efcdef1ad42d088f58225debfa78cf3540
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a phishing attempt to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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/pify?keyword=the+4+day+thyroid+diet+pdf+download
    • http://files.oregonoutbackadventures.com/uploads/1/3/2/6/132695568/ddee3e23aa.pdf
    • http://files.clickfourhelp.org/uploads/1/3/0/7/130776763/9359946.pdf
    • http://files.ddsbeautysupply.com/uploads/1/3/1/0/131070393/gujezugupitava.pdf
    • https://cdn.shopify.com/s/files/1/0429/6163/3439/files/advanced_language_practice_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/4219/3058/files/tezakasanifu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8356/3162/files/pearson_test_of_english_academic_practice_tests.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2657/files/gevunapasaneko.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/vuriduz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/bupubijizosaxazon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/bebovemelawoku.pdf
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/ruby_clicker_game_code.pdf
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/15367745273.pdf
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/piwawazufadudazexuvuso.pdf
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/37285287799.pdf
    • https://cdn.shopify.com/s/files/1/0434/5944/4889/files/basic_korean_language_with_english_translation.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_off00006232.bin
b3183ef8faf5ae3764680ee4b40add9e09ad4912ce380cd9b4bd745b45779a98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 4972 bytes
font_01_sfnt_off0000732d.bin
31a4726b31d2260321fcb41aa6fb04bf82cbb19bb2ff1464741a6269defb9054		 pdf-font-stream PDF embedded font (sfnt) at offset 0x732D 9676 bytes
font_02_sfnt_off0000942f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x942F 4324 bytes

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