Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95e36b212e309f7…

MALICIOUS

PDF

47.3 KB Created: 2020-08-15 08:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3500bc327515bdb3baafd2dcc3de2af SHA-1: 33fd02b6ab2415c4d43cda7616ade76a7f9bfbcd SHA-256: f95e36b212e309f763df1ccf6bd4ed16aa2d6caa7887ab254bf3dfd8b9e91a33
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by a PDF SEO link farm heuristic. The document body contains a call-to-action phrase, suggesting a lure to click the embedded malicious link. The primary malicious IOC is the redirector URL, which likely leads to the PDF link farm.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=minecraft+base++map
    • http://files.issseemscience.org/uploads/1/3/1/3/131383247/xiguzoxan-vuxuworuri.pdf
    • http://files.mbabechuk.com/uploads/1/3/1/4/131437779/jenoka.pdf
    • http://lixomivis.tinydapperfox.com/uploads/1/3/1/8/131856772/5809918.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/lakibogiguw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9624/files/19228046284.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/30432410472.pdf
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/apprendre_le_russe_lecon_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdf
    • https://cdn.shopify.com/s/files/1/0437/5986/1909/files/jenolodasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0586/9213/files/antibiotics_types.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/gantala_panchangam_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/3959/6454/files/83531965031.pdf
    • https://cdn.shopify.com/s/files/1/0434/0183/8744/files/sims_3_update.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_off00007c68.bin
f1ad996388c1208d6079dcc59ae0d5fdb352652a860bcb656ab812b9e5315e98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 5276 bytes
font_01_sfnt_off00008e3b.bin
6c3b3d7dbc52c9b9a4aadcdc6ef0d3264e6465777be84e152b849d4fa61693df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3B 10172 bytes

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