Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e9e57cb884d76e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-21 03:57:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e3ffd7d9eb504f7cb518e4a22072019 SHA-1: 5a87bb9860fce67d38be3d3117a608bbe759b13d SHA-256: 32e9e57cb884d76ed25209a2c941b8537a898a305fb288da1c724106da8381e3
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector link, indicating a phishing or scam attempt. The document body, though corrupted, suggests a lure related to educational worksheets. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. No scripts were extracted, limiting the analysis of the execution chain.

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=2d+and+3d+shapes+worksheet+grade+4
    • http://fubumuma.t-tranch.com/uploads/1/3/1/3/131383613/guzugedumig.pdf
    • http://files.lebanontrailptsa.com/uploads/1/3/1/8/131860938/3717077.pdf
    • http://files.teagardenssc.com/uploads/1/3/0/7/130775518/f5064de7151b6.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/genie_garage_door_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9390/0968/files/koxuxupupewesomigamupofov.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/kabusokejifoga.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0423/files/boomtown_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/5164979740.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/zexawuxilulup.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/6006/files/4206946165.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/9366402650.pdf
    • https://cdn.shopify.com/s/files/1/0433/9829/9813/files/34124294951.pdf
    • https://cdn.shopify.com/s/files/1/0437/0127/2729/files/38297714764.pdf
    • https://cdn.shopify.com/s/files/1/0438/4030/7362/files/addressing_modes_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/1-_99_fletching_guide_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0432/6686/7362/files/59250176702.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_off000069a9.bin
ac9646686868dfca0bb8577d1a2b503dd9f696d653e19b925b5494e8babdb4ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A9 5632 bytes
font_01_sfnt_off00007ce1.bin
dc5e633a67a4afaa7a9bb261a0cfd31ba076584ff16bcd67707666a29b2c2948		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE1 10088 bytes

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