Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ee34685fb7a7eb…

MALICIOUS

PDF

48.4 KB Created: 2020-08-10 13:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90aa52a6795c8a82f12ca599541ce10c SHA-1: 2629feb5faeabbc56f13f59e104a2513ac2d32c1 SHA-256: 00ee34685fb7a7eb6c16d2583e8a04d5d40a32882a1d2dcb94866adc4deb8ab0
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying it as a malicious redirector and another flagging it as a PDF link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=types+of+motor+insurance+policies+pdf', is directly linked to malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and other benign-looking Shopify URLs, suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/pify?keyword=types+of+motor+insurance+policies+pdf
    • http://files.raphikang.com/uploads/1/3/1/8/131856352/jofixekor.pdf
    • http://files.pirzlake.com/uploads/1/3/1/4/131437669/xebuvimekum-nujoferox-wosilodezo-xofugu.pdf
    • http://xuzufetox.promiselandgospel.com/uploads/1/3/0/7/130740178/selesevorog.pdf
    • http://files.minilivestock.com/uploads/1/3/2/7/132740415/38a223c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/0295/1842/files/morudifagezofosutiwepa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/calligraphy_fonts_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/soxapiwevuzorazuxanif.pdf
    • https://cdn.shopify.com/s/files/1/0434/6380/3040/files/daily_student_attendance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2821/files/tuminalidulofesarutede.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2158/files/87535631266.pdf
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/hillsborough_county_report_cards_2016.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevaziretojigadogikoranab.pdf
    • https://cdn.shopify.com/s/files/1/0443/5791/0684/files/online_marathi_book_reading.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/applied_mergers_and_acquisitions_bruner_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/gidadoxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/50845100888.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/5288580666.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a12.bin
d8c769ecc9e8070cb6cd348a8bedd588790e39d9c7b2eca7f475cee8fc6757d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A12 5352 bytes
font_01_sfnt_off00007c36.bin
2996d3d9c98c45e2b75e45cf0ca3956d9a2e577679be1b8e20f79ad455d7637a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C36 10204 bytes
font_02_sfnt_off00009f3d.bin
014fdb7076ebfc326e48e50914f0077be73d9a972b327c9fef30e9d59f054234		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3D 16080 bytes

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