Malicious PDF — malware analysis report

Static analysis result for SHA-256 06437a39f9fc7971…

MALICIOUS

PDF

41.5 KB Created: 2020-09-01 05:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecd14b32d22b12f71011825ed17a3765 SHA-1: 74bcd4862889c5d5e88929040cc0f5995fe75874 SHA-256: 06437a39f9fc7971046b54e0c3afa341face8d89a1e517b9478d45ab498041ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that point to a redirector service, which is a common tactic for distributing malware or leading users to phishing sites. The document body, though partially corrupted, suggests a lure related to a 'free raffle ballot template'. The presence of numerous external PDF links, including one to a known malicious redirector, strongly indicates a malicious intent to redirect users 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.cc/pify?keyword=free+raffle+ballot+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3463/0554/files/wivub.pdf
    • https://cdn.shopify.com/s/files/1/0437/8673/1681/files/notepad_plugin_manager_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/14799652368.pdf
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/sosenexesajofazemokiji.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8519/files/dewipukeperolusesirerul.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/35362889016.pdf
    • https://static.usrfiles.com/ugd/b8c837_108fc8ab29a64a10a410ea0c5d2b291a.pdf
    • https://static.usrfiles.com/ugd/ab059d_ef1d2c52ceee481eb17de3fc884cc475.pdf
    • https://static.usrfiles.com/ugd/0adedf_b3229e23a5a64924b591d8ed23cb754e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e89944775ce4cac9cbbc9645d74763d.pdf
    • https://static.usrfiles.com/ugd/9dda13_5d74f18c167b4b0d84bfb17ab4e6858e.pdf
    • https://cdn.shopify.com/s/files/1/0437/4659/0872/files/42786811340.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/tinizelutewejokin.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_off0000677d.bin
3a5db500a06bb8e721839d403240d38f386ec98cad9f02229d93cee124f48af4
pdf-font-stream PDF embedded font (sfnt) at offset 0x677D 4964 bytes
font_01_sfnt_off0000784b.bin
15aadf7232719a412fb3d9dad5a0d5c9c0768c40c0fda9040dc880bf9b2042a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x784B 9716 bytes