Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d22f9d25530c383…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 02:39:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7d73add1851a8afbd90fb80906d7111 SHA-1: 2dc0895937c0a4e434745ca45836bb26f6792ae2 SHA-256: 0d22f9d25530c383d43251f1effffa112ae5ab171f84292a67589152436fdad3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=benyamin+aadujeevitham+novel+pdf+download', is flagged as a malicious redirector. This suggests the document is designed to redirect users to potentially malicious content or to manipulate search engine results.

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=benyamin+aadujeevitham+novel+pdf+download
    • http://files.myrtlemoon.com/uploads/1/3/1/4/131454355/330a0f9aac00b.pdf
    • http://files.blankaphotography.com/uploads/1/3/0/8/130814874/gejudikikun.pdf
    • http://files.jbphotography.studio/uploads/1/3/0/7/130775633/9662753.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
    • http://smc.org.inhttp://smc.org.in
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/piresegabelizibubuxatepo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/93775162161.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/39069329985.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5126/files/1560643116.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9309/files/xesisu.pdf
    • https://cdn.shopify.com/s/files/1/0450/7539/8821/files/enhanced_ui_civ_5.pdf
    • https://cdn.shopify.com/s/files/1/0431/7996/6628/files/602857967.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/31683355415.pdf
    • https://cdn.shopify.com/s/files/1/0439/6548/1118/files/ms_sql_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0440/6598/0581/files/7844247596.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
    • https://gitlab.com/smc/meera/blob/master/COPYING

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006106.bin
e792abb3517825ba391dcff5fe8bba6861d7995bf6647b4ee47352a22fa09a26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6106 5384 bytes
font_01_sfnt_off00007353.bin
f1d1a77964a3cfa362de1b754920d11f92660785bd7001e6f32621475a19475f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7353 8012 bytes
font_02_sfnt_off00008f8e.bin
ac72a1989584a67e3f24d050521e75050d02b9462a85cfcd8198f6e54b16f577		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8E 9988 bytes

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