Malicious PDF — malware analysis report

Static analysis result for SHA-256 10076420918bbb8c…

MALICIOUS

PDF

37.6 KB Created: 2020-09-05 10:57:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 446078e33dde78045b8c99b451132556 SHA-1: 74708983c1df40d98f7660dee9f0fc6f4ad9c160 SHA-256: 10076420918bbb8c780c9e12d6cfd6a04509cdc68dc99f98734423f8a9b7b1f0
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.me'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for a free PDF download. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm or SEO spam tactic. While no scripts were extracted, the PDF structure itself facilitates the redirection.

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.me/wix?keyword=diccionario+griego+espa%25C3%25B1ol+biblico+pdf+gratis
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lunizededalusabunis.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/antenna_and_wave_propagation_by_kd_prasad.pdf
    • https://cdn.shopify.com/s/files/1/0460/9363/1652/files/munev.pdf
    • https://static.usrfiles.com/ugd/6116da_fbf671358c2441fd85a08a1446d32974.pdf
    • https://static.usrfiles.com/ugd/b371d9_61b51547b4914d2b87f6c356aad28576.pdf
    • https://static.usrfiles.com/ugd/0baf77_b6a27330d3e9494ab125c29e7ce2d4ff.pdf
    • https://static.usrfiles.com/ugd/04e6f9_f6d5044ee88f4c13a528eddefebfd0ac.pdf
    • https://static.usrfiles.com/ugd/d2b720_1cf2f398a2d048eda25100501ae6e4cc.pdf
    • https://static.usrfiles.com/ugd/dc6899_2641335eafba4c019d9edb38e83a8dfb.pdf
    • https://static.usrfiles.com/ugd/82e28d_951d0d811a984b31a2aa558002527576.pdf
    • https://static.usrfiles.com/ugd/ae15ca_9aaab240ccea4ddfb1686957ac683f85.pdf
    • https://static.usrfiles.com/ugd/97493d_cbc41fded8cc4cfc850c1ac40decb99a.pdf
    • https://static.usrfiles.com/ugd/3b47cb_c2b1eb81f9dd449bbbfcdf2de572a9c5.pdf
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/bekuvebegufe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/rijuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/vebitemufexuzi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047c9.bin
8d271688136d83c4adb2a9edde12a9f36d893575f8620c190d4ce355439a7746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47C9 5460 bytes
font_01_sfnt_off00005a1b.bin
292e9b43c184b70ca640cce957622f21e4b662ec6ca3168a1da5d5ad844e04fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1B 9512 bytes
font_02_sfnt_off000078f7.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F7 4324 bytes

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