Malicious PDF — malware analysis report

Static analysis result for SHA-256 a790565e849b0d8b…

MALICIOUS

PDF

33.8 KB Created: 2020-08-23 18:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c8fc7f1c7f632b6f773fd4266d8c3a0 SHA-1: 8c0d2fc2025892baa88db2785f939b18aca947f7 SHA-256: a790565e849b0d8b3d46afec50eae61e90893f9ca461e39462f3d785a49972bc
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised with text related to a civil service college annual report. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm or redirection strategy. The primary malicious URL identified is https://ttraff.cc/pify?keyword=civil+service+college+annual+report, which is flagged as a malicious redirector.

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=civil+service+college+annual+report
    • http://vetol.conflictchange.com/uploads/1/3/0/7/130739344/rebafajazo_masinivijewu_zenan.pdf
    • http://vijamarum.cyberpost.us/uploads/1/3/0/9/130969204/70995428727.pdf
    • http://files.247cybershop.com/uploads/1/3/2/7/132712325/6238873.pdf
    • http://files.onyxtheatretroupe.org/uploads/1/3/1/1/131163976/3870051.pdf
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/apc_1_kva_ups_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/22989269229.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/how_to_push_to_heroku.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/nofofasolene.pdf
    • https://cdn.shopify.com/s/files/1/0432/4940/2024/files/weromumewujozuvunes.pdf
    • https://cdn.shopify.com/s/files/1/0450/3732/2390/files/stock_certificate_template_microsoft_publisher.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/48797073346.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2312/files/14486487307.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/1695924904.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27947700243.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/divinely_guided_relationship_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/mamipoduwolemunififibo.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_off0000482f.bin
39f071dbfc95542d92d553b54672b3e7e695b209f8779b4054c102a633d13859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x482F 5064 bytes
font_01_sfnt_off0000597b.bin
3ed093bc42117391450af69d56cd9fae7227b14caaade75c41df8e2d852839c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x597B 9568 bytes

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