Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b9873e54afa28f…

MALICIOUS

PDF

48.2 KB Created: 2020-08-30 08:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 432c592cda4ec8bc968aabbac393270d SHA-1: e7e03600a1565bb77ef5224630c0ef0e05f4deea SHA-256: b1b9873e54afa28ffef1fc12ed0a547888e5f5422c06ee392d4a8394f4628419
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Suma de vectores metodo analitico y' and the URL itself, suggesting a lure to disguise malicious intent. The presence of a link farm heuristic further indicates an attempt to distribute malicious content through numerous 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/wix?keyword=suma+de+vectores+metodo+analitico+y
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/30338925724.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/bikunupalezopora.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/rixidi.pdf
    • https://static.usrfiles.com/ugd/cec570_5937045c83954b4b98c3cacbfb95af82.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/7435569158.pdf
    • https://cdn.shopify.com/s/files/1/0437/1569/0650/files/hierarchical_taxa.pdf
    • https://cdn.shopify.com/s/files/1/0437/2581/5959/files/vagelakozokagojopebum.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/wufokutifobokuruf.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8662/files/fanitasubazun.pdf
    • https://cdn.shopify.com/s/files/1/0434/6164/0352/files/air_pollution_and_control_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/clearance_hole_chart.pdf
    • https://cdn.shopify.com/s/files/1/0460/3143/7983/files/fogadatikolabip.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_off000060ac.bin
de10edf38afbd733370cdff732a47f886a4f40b66f4684d18ed21f701aa3c69c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AC 5348 bytes
font_01_sfnt_off000072c4.bin
bfa2de13b032e4a7283f4ddc0e7d9e36b63bf0488958e55eff0620039d293dcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C4 13636 bytes
font_02_sfnt_off00009d62.bin
2e8947c527022c2777c705293212bdbe99a5eaa236b45d3d417db44d5e5616b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D62 16076 bytes

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