Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eace0e02141556d…

MALICIOUS

PDF

47.3 KB Created: 2020-08-22 08:00:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e613843f8a714109bc2fe701bc670468 SHA-1: 09dde904e35a7237094adfc44389b0554815fac5 SHA-256: 1eace0e02141556dfb5108c1df5e51c8204de6546d0488294937802cbbe06405
154 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, 'https://ttraff.com/pify?keyword=electron+configuration+review+worksheet+key', which is flagged as malicious. Additionally, the document exhibits characteristics of a PDF link farm, with numerous links pointing to external resources, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering through a deceptive link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=electron+configuration+review+worksheet+key
    • http://files.poplarridgecarmel.com/uploads/1/3/1/4/131406600/8443782.pdf
    • http://files.imperialdancecompany.com/uploads/1/3/1/4/131437977/36483ec6.pdf
    • http://molesizej.jadiengelswellness.com/uploads/1/3/1/1/131164250/3178796.pdf
    • http://wifibop.fmhsabcmerchandise.com/uploads/1/3/1/3/131379326/4271d710e.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/speak_your_mind_3_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/jomuwupuxugaduzajatavigob.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/58738377958.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/kikakiwukarudonowaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/xupojakekarufuxodorobuji.pdf
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/32109576200.pdf
    • https://cdn.shopify.com/s/files/1/0430/2661/2378/files/proponents_of_rational_choice_theory.pdf
    • https://cdn.shopify.com/s/files/1/0438/8107/0747/files/engineering_technician_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/35762047973.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/tedowegofamefixuzawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/audio_songs_app_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/42998173376.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/the_walls_minecraft_server.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_off00007000.bin
9b15b3784a28740a1f73c63b8e2de4b0a4262438457761b4a47e35304be8b7f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7000 5420 bytes
font_01_sfnt_off0000828b.bin
3c7722ee763186dfbcda7ce2cd78627af80127c6675a43e34b8a43b6ddc304e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 14504 bytes

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