Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e129991de323536…

MALICIOUS

PDF

90.7 KB Created: 2020-08-15 02:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b8cb48ac8d675c91572db4ce79c4721 SHA-1: 16c6d81d30d21ea4a004382b0be3770a012cdc52 SHA-256: 3e129991de323536a2518d058c97ffaf73d34e1c9b22c7f397756eb816fff591
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 domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL that is also present in the heuristic firing. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm designed to improve search engine rankings, likely as a lure.

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=school+of+thoughts+in+psychology+behaviorism+pdf
    • http://files.cfirthwssu.com/uploads/1/3/0/7/130775411/a38b3.pdf
    • http://gijam.willardfreedomfest.com/uploads/1/3/1/6/131606339/samub.pdf
    • http://files.yisonline.com/uploads/1/3/1/4/131438077/5574541.pdf
    • http://files.mindbekind.ca/uploads/1/3/2/7/132740172/xikemo.pdf
    • http://files.vflhabersham.com/uploads/1/3/1/3/131380342/60c967e465090.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/bitujukaxofulafox.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/zefixepijuwiwoxasozukeguw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5327/6574/files/kepulazebif.pdf
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/pawifesopexanojovatori.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/lightest_reader_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/94109450923.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/how_to_cite_dialogue.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/3172597535.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/kusuwigesagosakekoxepuruw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7369/2063/files/a_view_from_the_bridge_full.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0315/files/38354143396.pdf
    • https://cdn.shopify.com/s/files/1/0440/7705/6165/files/xuwekukikiwikanubegitu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/sopidadimafunerimeme.pdf
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/farming_simulator_2017_starting_guide.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_off000119cc.bin
1377d5bf65ae29b16a701b4e160e96a5f7122f104571bab642a0bb0fdbe5b29e
pdf-font-stream PDF embedded font (sfnt) at offset 0x119CC 5976 bytes
font_01_sfnt_off00012df4.bin
c49e51c4e3a64e8a74d82c6034702c1a74727b8d0cd70990eb6d029057252698
pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF4 15156 bytes