Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c887413e4b9e836…

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 05:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ceb68984ededcf19e0bd72343c2315a SHA-1: d148a15300d9fad16052bae4d79f3ab9db641bf7 SHA-256: 7c887413e4b9e83626e8d22a1e7df650111c7c9927690a3d5add418dbc5060c0
154 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The presence of a large link farm suggests an attempt to distribute spam or lead users to malicious sites. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or spam distribution tactic.

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.com/wix?keyword=quick+draw+500+dlx
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/225520_53614cc18e5d432a8d362187226b1bda.pdf
    • https://static.usrfiles.com/ugd/6cf392_7551cdc644264e94ab690399fc202e56.pdf
    • https://static.usrfiles.com/ugd/b8c837_059c75bd1f784c759520fbf3d2df20cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_d098e4fd11204f8c9526e8a3bd5f751b.pdf
    • https://static.usrfiles.com/ugd/1f6d71_18b634c5ce644aa79857c71d9f83b82c.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/vawipiregedufa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/taxevedipowabavil.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/dugozati.pdf
    • https://cdn.shopify.com/s/files/1/0437/2155/6117/files/68247342669.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/15960614010.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/malacetic_aural_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/catholic_encyclopedia_volume_4.pdf
    • https://static.usrfiles.com/ugd/0d089b_1aaa4e4d98f14b74bcee1753d8b6e8d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_13cec9d0f67f43a7acac605aaaaa5d1e.pdf
    • https://static.usrfiles.com/ugd/87a178_097f4a0d553340e1924b4ec8fe6a8236.pdf
    • https://static.usrfiles.com/ugd/158fb9_ae727ec67d704853b7a0cf14bbcbead2.pdf
    • https://static.usrfiles.com/ugd/21a131_bc0096692820427db62081cc428ac9f0.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_off00006801.bin
90f5b51afb6303ce08771f2419cef153e273fe54805a5b52ecaae161c0220601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6801 5308 bytes
font_01_sfnt_off00007a36.bin
4c23180058b81e3c1d0dab38e8eaaa601a662780b1b0f947bb6fea4747ec9c1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A36 9844 bytes

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