Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c4e6736b40bdbb3…

MALICIOUS

PDF

67.7 KB Created: 2020-08-23 08:05:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2571348c9fa79d7adc929e0223df10b6 SHA-1: febaa6add245b99ef982fbf5954784adaabbeb19 SHA-256: 4c4e6736b40bdbb33dd9646a3c060d19bd7d9dd7bd4ab0101e84369d1b995cf3
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a mass of external links, many of which point to a redirector service. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'sales forecast template'. This suggests a phishing or social engineering attack aiming to redirect users to malicious content. No scripts were extracted, limiting the analysis of the payload.

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=sales+forecast+template+google+sheets
    • http://files.zazenphoto.org/uploads/1/3/1/3/131380759/5605dc51.pdf
    • http://files.reventnews.com/uploads/1/3/0/8/130813357/9957390.pdf
    • http://govuno.enactusguelph.ca/uploads/1/3/1/4/131453133/sezife.pdf
    • http://files.barrettfineartadvisory.com/uploads/1/3/2/7/132712214/c58e6.pdf
    • https://cdn.shopify.com/s/files/1/0435/6790/6979/files/85721378709.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/format_factory_for_macbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/23929779746.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/ff14_botanist_gear_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/berujixawajibexuxutuzogar.pdf
    • https://cdn.shopify.com/s/files/1/0432/7292/9435/files/wuwamam.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/pierre_bourdieu_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/ladotomidu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7619/8305/files/o_level_maths_probability_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/0996/6239/files/telapetuvilajumiji.pdf
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/wasamilefuti.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_off0000ca53.bin
0f60d0db37e84bf52ccc90dba08b1764014c4778d75b82946b921c66d779d585		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA53 5532 bytes
font_01_sfnt_off0000dcf7.bin
723e096b1f324d47750ffef2b68c8d4a0fed33e6971c6e7b600a72af3643ea94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF7 10704 bytes

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