Malicious PDF — malware analysis report

Static analysis result for SHA-256 185994f1f1978426…

MALICIOUS

PDF

48.8 KB Created: 2020-08-29 10:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3878a629f0bbc2fb4c6d1458b130fe8b SHA-1: db4fca10e7c79c3c98ad2175bcc8dab26c623232 SHA-256: 185994f1f1978426330c1a1ef400b4323c7e00b3663065bcbb3c96f1a480b22b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link disguised as a search query for online content. This link, 'https://ttraff.me/wix?keyword=aile+arasinda+watch+online+free', is designed to lead users to potentially harmful websites. The document also hosts a large number of other PDF links, many of which are generated SEO links, suggesting a link farm or spamming operation. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a 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.me/wix?keyword=aile+arasinda+watch+online+free
    • https://it.primevideo.funAile
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/polar_and_non_polar_molecules.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/zotirarudofusineberi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/sozizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/kuvezaporulige.pdf
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/12845213478.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/pobum.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/79742803501.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/the_real_vocal_book_volume_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/7379/8298/files/kijubasurogatazibanoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/2131/8818/files/54337885676.pdf
    • https://cdn.shopify.com/s/files/1/0432/1257/0783/files/10418855811.pdf
    • https://static.usrfiles.com/ugd/b8c837_81d617f85a66486da067242511db2bf0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b89788869c5943fcbffa2295ffcc492d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c283542dd054f8287c4545160b60715.pdf
    • https://static.usrfiles.com/ugd/b8c837_36015bfecebd4de887802a544476f7cb.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_off00006c26.bin
2e71122783a31714813573687ed2a5a2edee043be038b04d427aba39318967ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C26 5188 bytes
font_01_sfnt_off00007dcc.bin
908a1b0b55b88358ac577f02cf187b9663f84bbbfe95488e986ec7f467a741fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCC 10180 bytes
font_02_sfnt_off0000a0df.bin
bbe35e28b961b0945fd643f2af6592a4ea3ce3d1ac193c1d4ba6f847f464b47b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0DF 16192 bytes

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