Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c0f299410e3d920…

MALICIOUS

PDF

40.7 KB Created: 2020-08-03 19:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b707b9cceefa552675e34437f9cc3ae SHA-1: f7f87e783179fc051138772ba2d7c0f50a2f3ddd SHA-256: 3c0f299410e3d9204d71a779670ad4285c245e5f1ba86703e98bb4a7bc3f9cd1
120 Risk Score

Malware Insights

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

The PDF contains a link that is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to an 'HR job advertisement' and includes the same redirector URL. This suggests the document is designed to trick users into clicking the link, likely leading to a phishing or malware download site.

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=hr+job+advertisement+sample+pdf
    • http://files.diversifiedfixture.com/uploads/1/3/1/4/131482946/vukalesir-rusaxolujowaj.pdf
    • http://files.susanprolman.com/uploads/1/3/1/3/131398244/0c0c6947165a37.pdf
    • http://files.mhorakphotography.com/uploads/1/3/0/9/130969472/ragakupe_gepudivunageve.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bipifapokuwegi.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/litaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/kekaximusuwazaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5274/5375/files/siluratudavomoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/43006421916.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/81722687841.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0433/4980/3162/files/40882115241.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/69285813592.pdf
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/rimugidaluxatonixime.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/6455858305.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/lovaxepos.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_off00006266.bin
aa988380b5debcc08ada29ca5892050eb4090c9a4ed3de9c4ad084ced290ce6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6266 5424 bytes
font_01_sfnt_off000074c2.bin
76c10a858ad2b615a6048af8db543341b4259dbde700b66c19af921014a68af6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C2 9764 bytes

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