Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2cdc3806bd04e0b…

MALICIOUS

PDF

38.7 KB Created: 2020-08-04 11:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d00b054fe3ca37d2dd121c081d8ae12 SHA-1: da7f8f31b34d3af577c5967a6e6c2cae539a33f2 SHA-256: d2cdc3806bd04e0bcb18b3922fe563e18f60210aa2261d18dacf2c5dd1474122
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body text and metadata suggest a lure for downloading a 'Hoja de vida' (resume/CV), which is a common tactic for phishing or malware delivery. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to distribute malicious content or engage in SEO poisoning.

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/wb?keyword=hoja%20de%20vida%20minerva%20para%20descargar%20pdf
    • http://baxedev.fircrestumc.org/uploads/1/3/1/4/131408100/b54b004cf3500.pdf
    • http://dagir.sebastopolredwoodhouse.com/uploads/1/3/0/8/130874422/vimafulolafavalovede.pdf
    • http://files.twindphoto.com/uploads/1/3/1/0/131070192/zowafo_kofuvebepe_zuzorewikoso_kevezoganari.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0439/1642/7419/files/wonamove.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/bevagekasozo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2510/4028/files/16357710640.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/12578759726.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/88838778421.pdf
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/vexiraxijopis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/sosyal_bilgiler_testi_6._snf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0000/files/biosafety_cabinet_class_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/94939861409.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_off0000560b.bin
cc6d980eaa5959af8997a06938ec6303ed192eb2a46f7c47a0436a02270c13c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x560B 5540 bytes
font_01_sfnt_off000068d8.bin
a5bf48d8d52853f9fe0bf56af21cc57414a9e3e3a7bcf7f609a71b8d02918707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D8 11008 bytes

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