Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f46ecbb5025d635…

MALICIOUS

PDF

33.9 KB Created: 2020-09-18 05:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a3b47b454780075f8b595ad5583a05b SHA-1: 360f47a2a00ea4013a24803c38f25d552dd69b2f SHA-256: 4f46ecbb5025d63584efbfd46249524102c24a25fd59848119acd83d766fffff
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the primary URL, 'https://ttraff.me/wix?keyword=the+wicked+and+the+divine+1373+read+online', leads to known malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests that the document is designed to host numerous external links, likely to increase search engine visibility for malicious content or to distribute further malicious payloads. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=the+wicked+and+the+divine+1373+read+online
    • http://files.hillviewdartmouth.co.uk/uploads/1/3/0/7/130776769/5249187.pdf
    • http://giwedod.laocdb.com/uploads/1/3/1/4/131482916/jagewomum.pdf
    • http://soleja.colinlamb.com/uploads/1/3/1/3/131398036/a01f18a81b98e3.pdf
    • http://xewemoru.abidingwordct.org/uploads/1/3/1/3/131383748/0d4910a8d3.pdf
    • http://widikijeb.alyssaboisvert.com/uploads/1/3/1/6/131607131/6119472.pdf
    • http://bijapubeg.zenwich.co/uploads/1/3/2/8/132815123/batixelok-tumunek-xulejawuligiv-mawitow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/trig_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/44289745684.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/geography_of_japan_worksheet.pdf
    • https://c046cd0a-effd-48ea-a711-971547c50bcc.filesusr.com/ugd/277b62_4765f182a54045cda339f30acc2580a6.pdf?index=true
    • https://10f2ac82-2875-402b-9de5-ec958f27e8cc.filesusr.com/ugd/61c57f_0d6be53fbfb847aeb85fa6741a411899.pdf?index=true
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004610.bin
0d32c1a1310c44dd62ca4125a1cc33ef83dd1e6ca804e7b582ac1bba117433a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4610 5312 bytes
font_01_sfnt_off00005845.bin
ff61969df1f1bf63d1d69e9213c9dbe07bfe43276a5742c1c1a264cd4d6b8150		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5845 10232 bytes

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