Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b257700e0cc0030…

MALICIOUS

PDF

129.8 KB Created: 2020-08-01 20:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b41bec6dee8da6389aeaafd45b8b2dcf SHA-1: 4a631f351e47a0c6dbe82ae884d7969616f62537 SHA-256: 7b257700e0cc0030d29169f0a3cebd42058643ca4c5b91bb0d0bca567b8efa5f
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The presence of a 'download button' heuristic further supports this, suggesting the document is designed to trick users into clicking malicious links. The primary malicious URL identified is https://ttraff.cc/pify?keyword=kasap+electronic+materials+and+devices+pdf.

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=kasap+electronic+materials+and+devices+pdf
    • http://files.contemplarichristi.com/uploads/1/3/1/4/131436980/wigoxemo_mevanulare_dolimolevafiru_butixebogagiset.pdf
    • http://files.stretchedmama.com/uploads/1/3/0/8/130874612/sebon.pdf
    • http://files.rainbowswithinreach.com/uploads/1/3/1/4/131408353/buxunenebabogaledaga.pdf
    • https://cdn.shopify.com/s/files/1/0438/4758/1856/files/petarerasenofatizo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9344/9122/files/tusawovabagas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/28371470964.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/27594939864.pdf
    • https://cdn.shopify.com/s/files/1/0432/6214/8763/files/bulivevagu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8402/files/fitgirlsguide_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2311/3119/files/shounen_onmyouji_episode_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/jujamanapilix.pdf
    • https://cdn.shopify.com/s/files/1/0434/5446/4165/files/gesonepawixexisedux.pdf
    • https://cdn.shopify.com/s/files/1/0433/3800/6686/files/51293923351.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/bajabababi.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_off0001b66c.bin
1f323a63468415224c93a1bab0c73053d796b0f054c18fa608c1485d79fc1a8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B66C 5332 bytes
font_01_sfnt_off0001c882.bin
192aa3c3a4dcd4d57aa0833a0ec6b0ed5c69571cfc13a5e644d87de7f8ed7610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C882 15884 bytes

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