Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d58885f1206ae9…

MALICIOUS

PDF

65.6 KB Created: 2020-09-11 11:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e564f7a9120e94c30f2c63173cd6b254 SHA-1: e38b421382c315a3cbb242b937ab5679776e4867 SHA-256: 62d58885f1206ae94aeb24a470250851bf4f0e599e595c3745214a611bb3eb84
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with a keyword suggesting a legitimate document. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, many of which appear to be part of a link farm designed to manipulate search results. The ML classifier strongly indicates maliciousness, and the embedded URL is a primary indicator of the attack's intent to redirect the user to harmful content.

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/pify?keyword=ethical+issues+in+business+pdf
    • http://files.local598.com/uploads/1/3/0/9/130969083/9884208.pdf
    • http://zekobef.kaoisoccerclub.org/uploads/1/3/1/4/131406069/pajup.pdf
    • http://fotivi.covenantbiblecamp.org/uploads/1/3/1/3/131398225/pivivabuloziji-fulazonokinisan-gobetepoxaraki-nosepiluzin.pdf
    • http://files.mielelohim.org/uploads/1/3/0/9/130969545/2835236.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/a32c20_eb318756b6d5403ab295124de917b592.pdf
    • https://static.usrfiles.com/ugd/a42eed_97ded7af69554a749fe47dc2e303a458.pdf
    • https://static.usrfiles.com/ugd/0d089b_29fe6e34f3a540628c60d4e4d1ebc69d.pdf
    • https://static.usrfiles.com/ugd/6924eb_ec18b263b1ad403a9acdb25173eb95d7.pdf
    • https://static.usrfiles.com/ugd/6f53d7_994ca64764094918af0e623f1ed7e9d7.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_6c8778005e4541f39336222a381736cb.pdf
    • https://static.usrfiles.com/ugd/b28561_0c72d9d652c0451e9288b213f10efef8.pdf
    • https://static.usrfiles.com/ugd/3826db_143f1613514a477b9fa42c42fc099b2d.pdf
    • https://static.usrfiles.com/ugd/7f16bd_c1d505405706419caad2d9d41d9fcc27.pdf
    • https://static.usrfiles.com/ugd/fd3290_4751b54b4a524c128101c145105b8b13.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_off0000c530.bin
7a2993950ac066b328f2bd10651149a67d53c65a0828208a34801e1a07cd020c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC530 5244 bytes
font_01_sfnt_off0000d702.bin
9416b8b22506bbaef77eeb745c00863d359d8d559922ccc901bb49e46038087e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD702 10088 bytes

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