Malicious PDF — malware analysis report

Static analysis result for SHA-256 1813ac0674b29af6…

MALICIOUS

PDF

55.3 KB Created: 2020-09-02 08:26:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9806cd87f39ba4c51535e9b5071554f8 SHA-1: 5a41739d2ea4f6a459dd39cc07a5d120752176ba SHA-256: 1813ac0674b29af6e831bc32584bf67923ddd76bb5fbe996c766ae41a485cc4b
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirector infrastructure. The primary malicious link, 'https://ttraff.link/wix?keyword=awadhesh+premi+dj+remix', is designed to lead users to potentially harmful content. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of 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.link/wix?keyword=awadhesh+premi+dj+remix
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://static.usrfiles.com/ugd/8acad3_4e25200456414685a3fbb9652d6968e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc032211353441aaf2642c7d3f9f21f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4a0dc562a6c4845bc8fd5cea9e27c2e.pdf
    • https://static.usrfiles.com/ugd/1cc777_eaba5fe262ae41eba4af7cfc1de2626e.pdf
    • https://static.usrfiles.com/ugd/b98abb_6a610cd593e94a1d95ae012e924f0967.pdf
    • https://static.usrfiles.com/ugd/409ca8_b6a1112aed1f4d948b5d2cac60fd840d.pdf
    • https://static.usrfiles.com/ugd/d94ae5_877dae2aac8747c0a934d78176a642f5.pdf
    • https://static.usrfiles.com/ugd/913720_7b038c59671b4360a039cbf635b61dfc.pdf
    • https://static.usrfiles.com/ugd/3b47cb_a12fee3fdeda444c81499aa97ebefd7e.pdf
    • https://static.usrfiles.com/ugd/b5472a_d40c7c2d9ae847d2a23fd2e24bd3a9c8.pdf
    • https://static.usrfiles.com/ugd/f14cf6_c9add9fd53984eb99e2ba9f68d0eeb28.pdf
    • https://static.usrfiles.com/ugd/11f207_766283a613a3480e80562e27a2544327.pdf
    • https://static.usrfiles.com/ugd/b8c837_323fc7260c8e4fbf8ba06a48e7f2aac7.pdf
    • https://static.usrfiles.com/ugd/9734e7_48a38cec1b9c4d4d902b25b4102259a4.pdf
    • https://static.usrfiles.com/ugd/d32f78_baa8f044c047499889e69fe40513aa7c.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_6170ad646fa94455a7b3208532759de9.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059a4.bin
5e2de4859e4c2d7d942355ffa7d88400b720d2af3c09667e88fce1838d14fda0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A4 5392 bytes
font_01_sfnt_off00006be1.bin
71fa5bb96a7b490da2c13c725d4875ccb904503777ae84dbba9d454ecab438d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE1 2424 bytes
font_02_sfnt_off00007566.bin
05b4f13a874308254561905cf67f38877cac0f0db0fe3fc5753eeaa83b717ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7566 13668 bytes
font_03_sfnt_off00009f67.bin
a684f852a7e00a40c175a335aa13c950454e0130ed827a3956751422cbabb716		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F67 18888 bytes
font_04_sfnt_off0000bd74.bin
7e2a5e301f6efcbabb69a8cc2ccd87d5a937d5e57d4681b51f79a971ae8c1b06		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD74 4016 bytes

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