Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bca1e00120daf80…

MALICIOUS

PDF

43.1 KB Created: 2020-08-23 18:30:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877c22b16b1a378b283e8072e04aeb71 SHA-1: 30c6c3d7a3f3dd43fcea3bc6c07ccb61ec193e95 SHA-256: 4bca1e00120daf804bad0494bc8e40c6ebe99e40cde16807aef5709054bd3722
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=doubling+rule+for+spelling+worksheets'. Another heuristic indicates a PDF link farm, suggesting an attempt to distribute or obscure malicious content. The document body, though partially corrupted, contains text related to 'doubling rule for spelling worksheets', likely a lure to encourage clicks on the embedded links.

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.com/pify?keyword=doubling+rule+for+spelling+worksheets
    • http://sevuzana.northernhillssos.org/uploads/1/3/2/7/132712407/xixajoxoxo.pdf
    • http://files.meadowbrookpololodge.com/uploads/1/3/0/8/130813135/33aea7b1.pdf
    • http://vetezu.liattorney.com/uploads/1/3/2/6/132681352/jadevufotatujimale.pdf
    • http://xisuravej.kisdesigns.net/uploads/1/3/1/3/131383483/d079838b31d0c.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/poludivim.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4049/files/kutejoladodiloxes.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/excel_rate_function.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/46997608346.pdf
    • https://cdn.shopify.com/s/files/1/0432/1155/4980/files/98305478620.pdf
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/60078887369.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/55770885408.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/enrichment_math_worksheets_for_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0438/3532/6624/files/contractions_worksheet_first_grade.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/evowars._io_mod_level.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d92.bin
502eda2bcbbb3e7020bd2ecc49358544c2818bb2dae4af56397c19fac63f782e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 5128 bytes
font_01_sfnt_off00006f14.bin
c107c2e3dd2a458b98e5b1dac30e4e99c668da696b9b9ff2bba5c913f89e57e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F14 9996 bytes
font_02_sfnt_off0000915a.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x915A 4324 bytes

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