Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f209ae4f91d87f…

MALICIOUS

PDF

46.2 KB Created: 2020-08-09 23:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01aae18af146b4c16d3ddc296326a2ae SHA-1: c67d7a571bb6eac2180c7054257286cffc4c6180 SHA-256: 58f209ae4f91d87fec2c873822db37816b83fb993b00e8a6fc05f1fb12515290
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=data+structures+and+algorithm+analysis+in+c+pdf', which is a known malicious redirector. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=data+structures+and+algorithm+analysis+in+c+pdf
    • http://mukita.thelotuseg.org/uploads/1/3/1/4/131453541/pudasawomesuto.pdf
    • http://files.educationfoundationoflm.org/uploads/1/3/1/8/131857419/kamolikex_fereniwalom.pdf
    • http://files.kashmirgoldens.com/uploads/1/3/1/4/131407067/xokakemamora_raberazakuwigif_duluwinumaxe_fipane.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94430640368.pdf
    • https://cdn.shopify.com/s/files/1/0432/7263/4533/files/32756015093.pdf
    • https://cdn.shopify.com/s/files/1/0437/6746/4093/files/bozadaluzekekirufuvuzalon.pdf
    • https://cdn.shopify.com/s/files/1/0428/6113/3990/files/california_dmv_bill_of_sale.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/kijowaleli.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/sufufewikiwika.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0408/files/47848752879.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/jedezufita.pdf
    • https://cdn.shopify.com/s/files/1/0434/5449/6935/files/4220436919.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_off00005f55.bin
52c6e8fafd388ada59f27400f07395a2892437d9029fc70e41e9a10323203329		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F55 5672 bytes
font_01_sfnt_off00007281.bin
84d673f96d545f9c3a34f70fc2c9c3e88f368c91d0b560f6220d1fda3972a967		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7281 10128 bytes
font_02_sfnt_off0000955b.bin
1b44218257806f750c7fedc2cca84b6b30ff477c2da870f9e14c0541087d9c9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x955B 16544 bytes

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