Malicious PDF — malware analysis report

Static analysis result for SHA-256 955cdfb1dee72a0c…

MALICIOUS

PDF

46.9 KB Created: 2020-07-30 09:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a68d72eb11e42662ee7df8bd9a8cd69 SHA-1: dffa04de7494be895a4158b78126fa7d45892a62 SHA-256: 955cdfb1dee72a0c65cf44d2f81980da3e13af827d6b66ce19a992b014c2d61e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating redirection to known malicious infrastructure via 'https://ttraff.cc/pify'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates the PDF is part of a link farm, likely for SEO manipulation or to distribute malicious links. The document body, though heavily obfuscated, contains text related to 'Biosecurity in poultry farm pdf', suggesting a lure to disguise the malicious links. 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.cc/pify?keyword=biosecurity+in+poultry+farm+pdf
    • http://files.jovaunholmes.com/uploads/1/3/0/8/130873973/818c81.pdf
    • http://files.eastsideipc.com/uploads/1/3/1/4/131437276/kituwidirofedal_wojelazoki_jefonufu_fukizoresasun.pdf
    • http://files.medtechwearables.com/uploads/1/3/1/4/131407357/joziduvanefe-bosogoges-kigipuv.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/padukazaxawu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6320/6307/files/zugejaritujino.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/vojuratetimapajenuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6902/files/2226662710.pdf
    • https://cdn.shopify.com/s/files/1/0433/4593/6534/files/fowomijatevefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/keruj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6735074847.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/20906396508.pdf
    • https://cdn.shopify.com/s/files/1/0438/4351/8614/files/66399715854.pdf
    • https://cdn.shopify.com/s/files/1/0434/9037/7894/files/4364863557.pdf
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/20132075597.pdf
    • https://cdn.shopify.com/s/files/1/0438/3096/8480/files/52082347206.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/
    • https://cdn.shopify.com/s/f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007af6.bin
1eb39a1742a8067678f4d30739706ec090b9bcab2753d25ae5ab202b8cd57b50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF6 5332 bytes
font_01_sfnt_off00008d01.bin
78025b25efcc762c9bd889b7370932227965d75ea643ef657c168b4096e40cb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D01 9832 bytes

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