Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f49ec9116406cab…

MALICIOUS

PDF

56.3 KB Created: 2020-08-06 06:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbbf0ffeac892a4a754d7d622aadf5ec SHA-1: 465f96df8424b22915c38361f03f73f4cdeef48d SHA-256: 2f49ec9116406cabe2ad5907880baf182c540f77c4daa4bce4a3c00a539e8c44
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the search query 'Renaissance periodization diet pdf free' and the malicious URL, suggesting a lure to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=renaissance+periodization+diet+pdf+free
    • http://files.byfieldschool.com/uploads/1/3/2/7/132740498/9616046.pdf
    • http://guxina.laserlipostudios.com/uploads/1/3/2/7/132712207/fb56e4be4f83a.pdf
    • http://likip.wainfleetskating.ca/uploads/1/3/1/4/131453133/1b45a64f.pdf
    • http://files.musicals-101.com/uploads/1/3/1/3/131381799/134219.pdf
    • http://files.sachagrosselart.com/uploads/1/3/0/9/130969209/belizifimekedaxuwuzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/57703508869.pdf
    • https://cdn.shopify.com/s/files/1/0438/8143/1195/files/46035316487.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4920/files/vijogusubivu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/briggs_and_stratton_675_series_carburetor.pdf
    • https://cdn.shopify.com/s/files/1/0432/8993/6025/files/1361489024.pdf
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/vidufevofizitafi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/63801806974.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/wiiu_usb_helper_title_key.pdf
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/20358483480.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/how_to_take_apart_an_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/36471030850.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/wedixop.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/alter_ego_a1_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/apprendre_l_allemand_niveau_a1.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/
    • https://cdn.shopify.com/s/files/1/0434/66

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e23.bin
4cccdbf3ccd97d412ba4b4c9dcf14a861c9baff3449469b9cdd88ccdd43a2ff3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E23 5176 bytes
font_01_sfnt_off0000afde.bin
90fb60dee40750b9051c2c8e9477e3d7a07d6672d7b5a17960879380acc180c3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDE 10420 bytes