Malicious PDF — malware analysis report

Static analysis result for SHA-256 a057baf7db4cdd2b…

MALICIOUS

PDF

44.5 KB Created: 2020-08-17 02:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4524448d96ca1fbd8152375db21a7eee SHA-1: 7b0e3a5c7fce2c9fdc678c51461c208bafecd14f SHA-256: a057baf7db4cdd2b5f12d1ef9a2cd85a0e6378b66c3d345da1b37d655b390098
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, with the primary one being a redirector. The document body, though heavily obfuscated, contains text related to organizational charts and a URL that matches the malicious redirector found in the heuristics. This suggests the document is designed to trick users into clicking the link, likely leading to a further stage of attack.

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=organizational+chart+hierarchy+templates
    • http://mowapumuw.glassplaqueawards.com/uploads/1/3/0/7/130775934/xaxilajale.pdf
    • http://nebax.stjosephmissions.org/uploads/1/3/2/6/132681352/figuropag-kukujusuxivupe-xapiwudenejiwu.pdf
    • http://files.sekulas.com/uploads/1/3/1/0/131070488/medomisutotup_dabaxalifositun_fudek.pdf
    • http://files.koosdesign.com/uploads/1/3/1/4/131437567/df0ad6e047fd1.pdf
    • http://files.sophie-eleanor-photography.com/uploads/1/3/1/3/131379781/9691710.pdf
    • https://cdn.shopify.com/s/files/1/0437/7329/6789/files/fezixosowin.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/xadakagupunopezes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/zozufoxet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/93026722580.pdf
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/4083547783.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/4089399014.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/37715125574.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59577082877.pdf
    • https://cdn.shopify.com/s/files/1/0437/7598/3778/files/52010819183.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/fimirenejiwojetimaji.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/fatene.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fc0.bin
07e97670b88207fc3211087f250a467b27378904c789e561d066b9ee11481887
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC0 5524 bytes
font_01_sfnt_off0000826a.bin
da32381841521c50bb926f89a20493003f99bd67aba65b5c171d1ec127f6235d
pdf-font-stream PDF embedded font (sfnt) at offset 0x826A 9944 bytes