Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aea80cc8e62a5b8…

MALICIOUS

PDF

42.3 KB Created: 2020-10-15 22:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdb47d8997d7262c007a77008878e356 SHA-1: 5e210a00c9bd70751e864ab2a68f4b4b843bf197 SHA-256: 4aea80cc8e62a5b80730efe65d11948c589d0daa0af6d38a554a6d4b49d1a055
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting the document's content is directly related to the malicious redirection attempt.

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.
  • 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.club/pify?keyword=doterra+balance+pdf+espa%25C3%25B1ol
    • https://site-1043571.mozfiles.com/files/1043571/sananodidudatexalepo.pdf
    • https://site-1042355.mozfiles.com/files/1042355/zimexeramanivive.pdf
    • https://site-1039356.mozfiles.com/files/1039356/80591111924.pdf
    • https://site-1040879.mozfiles.com/files/1040879/xabefakalapadolufosobel.pdf
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f87feb267f3f.pdf
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f87c460dd3a8.pdf
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f87324f7aca9.pdf
    • https://site-1037189.mozfiles.com/files/1037189/rodekat.pdf
    • https://site-1043800.mozfiles.com/files/1043800/44227451835.pdf
    • https://site-1038611.mozfiles.com/files/1038611/lidigatamurevab.pdf
    • https://site-1042188.mozfiles.com/files/1042188/22544252393.pdf
    • https://site-1040610.mozfiles.com/files/1040610/31948992399.pdf
    • https://site-1039621.mozfiles.com/files/1039621/doxitemevenim.pdf
    • https://site-1042633.mozfiles.com/files/1042633/64142545760.pdf
    • https://site-1040516.mozfiles.com/files/1040516/powegigeli.pdf
    • https://uploads.strikinglycdn.com/files/3e90a8e9-ade2-4d12-9f93-f13dac25e836/41781083460.pdf
    • https://uploads.strikinglycdn.com/files/3e3c84f5-fe71-433a-9ab4-3122fb04a108/sagujaxosogerozare.pdf
    • https://uploads.strikinglycdn.com/files/c7053a95-f4d4-4aba-bef6-984740519b30/43271439927.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/pulp_fiction_ezekiel_verse.pdf
    • https://cdn.shopify.com/s/files/1/0438/1661/6096/files/bebewipabozavazevalisi.pdf
    • https://cdn.shopify.com/s/files/1/0484/4149/1614/files/5862434031.pdf
    • https://cdn.shopify.com/s/files/1/0432/4353/6552/files/kadufeporavilenimevomi.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000644e.bin
a4130384e023d3ed766e9f84d776034332475186968edc78671a686f80ade98f
pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 5500 bytes
font_01_sfnt_off000076c8.bin
794dffdc3b6d82397b5e6d13076ad1b041c572eb34fdbfa28953bc25ee2df378
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 10552 bytes