Malicious PDF — malware analysis report

Static analysis result for SHA-256 93cb4008727804c7…

MALICIOUS

PDF

66.6 KB Created: 2020-08-15 16:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4b66ddd5266eb0855d2ee819d5e7119 SHA-1: e012cc70479118150655afb2632438cf2b942eee SHA-256: 93cb4008727804c7d99027896729940e113301b5cd3c2253f1d1eaacb07e67cf
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a mass external PDF link farm, indicating a phishing or scam attempt. The presence of a visual download button lure further supports this. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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.cc/wb?keyword=html%20to%20pdf%20django%20github
    • http://files.beitnachum.org/uploads/1/3/1/4/131483253/ximegigojepirez_rabisosip_suwupisi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/wavelet_transform_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/60171535991.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/hfss_antenna_design_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/blackstone_fortress_escalation.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/vesitupabugizezumotomin.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/nivutisijimededajen.pdf
    • https://cdn.shopify.com/s/files/1/0435/8782/9928/files/4594132940.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/zizobazudezenidusenapu.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/59177680184.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/11199966534.pdf
    • https://cdn.shopify.com/s/files/1/0428/7388/0739/files/81764872312.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/21604713086.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_off0000b09c.bin
176031ec58e9eeffd24f5cbf28b2628edfad89eff1671d63049cb68ea11303c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB09C 5360 bytes
font_01_sfnt_off0000c2b9.bin
efb816524cfa138687b8fb9485097b67a761812b788b26ca07a57a07e625bdb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B9 19368 bytes

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