Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa0b57bf4a4e1bab…

MALICIOUS

PDF

284.8 KB Created: 2020-08-14 14:20:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02cc767b8414c24770eca6c2300874a5 SHA-1: aadb670564b9dd7e19b523ed837540ee4b8abb97 SHA-256: aa0b57bf4a4e1babf758f8afc79568ae125eb679720c734aaeb911f0470f9147
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier strongly flagged this PDF as malicious. The embedded URL leads to a redirector that ultimately points to 'https://ttraff.cc/pify?keyword=module+6+test+answers+health', suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 2

  • 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.
  • 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=module+6+test+answers+health
    • http://files.blingattiphanys.com/uploads/1/3/0/7/130776445/dedadobigupek.pdf
    • http://files.positivelifetransformations.com/uploads/1/3/1/6/131637273/bexerexekali-nivoxef-worowexako.pdf
    • http://files.tiffanyshocklee.com/uploads/1/3/1/0/131071067/df707f35468f0a6.pdf
    • http://files.ecmstudy.com/uploads/1/3/2/7/132711947/8d7668123d.pdf
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/67434571227.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/iphone_5c_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8959/2473/files/advanced_probability_theory.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/34080094084.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/58838047427.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/gmail_search_operators.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/livro_acgih_2020_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7392/files/pengertian_asidimetri_dan_alkalimetri.pdf
    • https://cdn.shopify.com/s/files/1/0452/3062/0832/files/namakam_chamakam_download_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/sosafokubefexugir.pdf
    • https://cdn.shopify.com/s/files/1/0433/7670/5690/files/logodatufotofikozanoba.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/ruzepexuwutafoke.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_off00040aca.bin
033e215312ef7634f102c386bd53359242e0f243dc64d9a7b47a1586d90f5ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40ACA 5164 bytes
font_01_sfnt_off00041c63.bin
68aa5ccd69ed541740b2de87441d1958fa22be7a952cb02a064e6ee72213cd08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41C63 16632 bytes
font_02_sfnt_off00044ff2.bin
06d84a79787f49517cba9647d12dd77c675544b9e46e70dbd0c3ec2b8d2a160e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44FF2 16132 bytes

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