Malicious PDF — malware analysis report

Static analysis result for SHA-256 674cb6cef7bbc83f…

MALICIOUS

PDF

46.7 KB Created: 2020-08-31 05:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26385fdc75ea9668d239eadd650ab2ff SHA-1: 68492026fc01f5f33ea06d8c5c64318d7940523d SHA-256: 674cb6cef7bbc83f290b28acba49904a16b0dd2dfdf649223d0f3c001cd436d5
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'book report examples' and includes the malicious URL. This suggests an attempt to direct users to malicious content, likely for phishing or malware distribution.

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/wix?keyword=kitap+raporu+%25C3%25B6rnekleri
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/97137143555.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/18585253354.pdf
    • https://cdn.shopify.com/s/files/1/0428/6359/1590/files/anemia_falciforme_hemoglobina_ss.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0335/files/vaxonele.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0564/files/broiler_pan_vs_cookie_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7805/files/7441040670.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/89777020096.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/74591150087.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/benim_hocam_ayt_edebiyat_ders_notlar.pdf
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/abnormal_psychology_textbook_2nd_edition.pdf
    • https://static.usrfiles.com/ugd/a48928_d5283704fa8d4844b83ef04cd0840881.pdf
    • https://static.usrfiles.com/ugd/b8c837_4313308705f74d1a96c0cb5f2c6c24a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_675826b6c0e14a5c887689b8dad0a5f5.pdf
    • https://static.usrfiles.com/ugd/45e30f_18a0e45905a34cdd9c21c2b8250ef8d8.pdf
    • https://static.usrfiles.com/ugd/4d6844_ddabb6766e6e4eb287dae4c39cdf285f.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d9ffaeceb504c518a6638ab40a23277.pdf
    • https://static.usrfiles.com/ugd/362633_74a2027580d44e58b806babe38de67c8.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007856.bin
f219b02ae995f4c9d411767decda147140c5fd754aeab048d81739a9812cf702		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 4808 bytes
font_01_sfnt_off00008876.bin
b7b7d4433ec10ff9f34a529cff7abf6075610b060ea300b5964f34c17554d47a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8876 11724 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.