Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c0e72a41733131…

MALICIOUS

PDF

45.6 KB Created: 2020-08-28 23:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd6d12ae20cd79f3cfea6b9466ff056 SHA-1: f35243d15d60474e3c68f12066e4717ebfeb1bd1 SHA-256: 10c0e72a41733131851a1251bb6c3c8815a75dc041098f725daff606f83d990f
154 Risk Score

Malware Insights

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

This PDF file contains a link designed to redirect users to malicious infrastructure, disguised with a search query for a popular movie. The PDF also hosts a large number of external links, likely for SEO manipulation or to spread malicious content. The ML classifier strongly indicated maliciousness, and the embedded URL is a primary indicator of compromise.

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.cc/wix?keyword=the+chronicles+of+narnia+full+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://static.usrfiles.com/ugd/b8c837_e268caaef2da41fcadac0c154334b4f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_14d2ad49b4374aca9468dc11e86e9712.pdf
    • https://static.usrfiles.com/ugd/b8c837_eceaa00d0e2d4ebd8888d8e36a723509.pdf
    • https://static.usrfiles.com/ugd/b8c837_73f27eb718514f14964a172096bfde1c.pdf
    • https://static.usrfiles.com/ugd/b8c837_916e44f6fad5480fa1539ac33117e80c.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d4996c4c49c4289a8913bc5ffcd4555.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ef5f099d7c24892b17015a034fc3c0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5f0b8d127c7440aa11bdf2ae9256a3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_15844fb1dc5047559324f2132a9ad118.pdf
    • https://static.usrfiles.com/ugd/b8c837_849ea72b66b94d2296ea6375bc26e85b.pdf
    • https://static.usrfiles.com/ugd/b8c837_758a16ec0518498996994908b41602d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f2190803f6a4aa79018dbb087649e63.pdf
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/setusipadoma.pdf
    • https://cdn.shopify.com/s/files/1/0429/0071/7724/files/deck_heroes_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5010/6018/files/dolesafojetogonasifub.pdf
    • https://cdn.shopify.com/s/files/1/0430/9978/3319/files/coursera_machine_learning_quiz_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/6434/5247/files/2564416252.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067f0.bin
2e098c920951397a521b5edbca5ed7bd48df91d2a45eb8261fc01987c1c8abe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F0 5128 bytes
font_01_sfnt_off00007938.bin
0265b99ebfd23a1271b61b399843ddcbe950a7ac58f2621d8e1bd7d154b2f42a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7938 2980 bytes
font_02_sfnt_off000084df.bin
933a3a310eab2694cdc9eef2702077c46dad2ff81a92e5d89fe6a5b0b00f66ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DF 10684 bytes

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