Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4e9e645fa650940…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 09:50:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e620ec62fc01ae4543a17244153ba319 SHA-1: 283f58faeda45d61373eaa6ca3d139672dbf207d SHA-256: b4e9e645fa650940e0d8fe9342a092e5fcfaee4d48d9cd5addee798c8c4a8dbf
130 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'sample drill down report'. The presence of a visual download button heuristic further supports the social engineering aspect. The primary malicious link identified is https://ttraff.cc/pify?keyword=sample+drill+down+report+in+ssrs, which likely leads to further malicious content.

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/pify?keyword=sample+drill+down+report+in+ssrs
    • http://gavate.oklahoma-chapter7.com/uploads/1/3/2/8/132814930/7057028.pdf
    • http://dovep.pluckthemusical.com/uploads/1/3/2/8/132814930/bipisagulu-demuli-xexiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/favowevajudafegimawev.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/pewimosabudevowabilobu.pdf
    • https://cdn.shopify.com/s/files/1/0466/7529/6421/files/arborist_report_cost_melbourne.pdf
    • https://cdn.shopify.com/s/files/1/0431/9998/7873/files/99914517453.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9308/files/gatato.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/tisow.pdf
    • https://cdn.shopify.com/s/files/1/0439/4103/6200/files/39643934747.pdf
    • https://cdn.shopify.com/s/files/1/0433/5291/6119/files/boule_suif_texte_intgral.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_off0000603d.bin
ce3b99e954bc053ab17d01df2f163a03edd8ca467d7219c4a757d6e1c4da6153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 5300 bytes
font_01_sfnt_off0000723a.bin
1743aa28801fbb3fb924e5464832e26b0e7ab3b02245f05eaa1a3db9f43e0009		 pdf-font-stream PDF embedded font (sfnt) at offset 0x723A 11624 bytes

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