Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3eacb5e533f0ec7…

MALICIOUS

PDF

46.6 KB Created: 2020-08-22 15:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48559ca3740a0a370a233b3ee5af56da SHA-1: 8164157f99917711b101318d9ccab3e4bc8b732b SHA-256: f3eacb5e533f0ec7d9e64623a603a997dc86a8fe9a3d6223e454272eff81f347
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL that leads to this redirector, suggesting a phishing or malicious content delivery attempt. The presence of multiple external PDF links, some pointing to benign content and others to unknown domains, indicates a link farm strategy, likely to obscure the malicious destination. No scripts were extracted from this sample.

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=royal+canin+recovery+food+feeding+guide
    • http://files.littlesparrowstudio.com/uploads/1/3/0/7/130776047/tikudabulinewerero.pdf
    • http://files.iwanttobeinsured.com/uploads/1/3/0/7/130738836/xosepexemififemafa.pdf
    • http://files.herbheathmusic.com/uploads/1/3/1/4/131406412/desuregik.pdf
    • http://files.sheeshworldwide.com/uploads/1/3/2/6/132682882/fugonugofude.pdf
    • http://files.judygrillo.com/uploads/1/3/2/6/132681281/caa620b286dc.pdf
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/convert_gallons_to_liters.pdf
    • https://cdn.shopify.com/s/files/1/0435/4247/9007/files/make_file_size_smaller_in_acrobat_pro.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/buffalo_bisons_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/regression_analysis_in_data_mining.pdf
    • https://cdn.shopify.com/s/files/1/0439/1695/1704/files/8775767887.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/10351150470.pdf
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/belanapodip.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/uptet_answer_key_paper_2_2020.pdf
    • https://cdn.shopify.com/s/files/1/0452/8416/3746/files/difference_between_criminal_law_and_civil_law.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/pesinu.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_off00005d9b.bin
adc2f28cb6de961c10062319d88751932baf48e6554df2f5d2d572979d06f3fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 5180 bytes
font_01_sfnt_off00006f58.bin
b4bf8a0e561dbdda77011981aa964eefd5b55b56852ea26b371fd5e35fcd0b4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F58 11248 bytes
font_02_sfnt_off000095f5.bin
e1c65be4c5f8f0b34a2a83be491258260ab670a677ba0b245be37f1dd7ca4c27
pdf-font-stream PDF embedded font (sfnt) at offset 0x95F5 16704 bytes