Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b93a73cc0d151a…

MALICIOUS

PDF

118.2 KB Created: 2020-08-01 13:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a71bb3a2b03df110856d2310cc9fbb2 SHA-1: 5c1a62764a80cc97f366ea794c0b65ad2bcddd21 SHA-256: 80b93a73cc0d151a9f904a0f0973264160dc1024f263e01d431ccf114c0edde8
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'Glados voice generator'. The document also functions as a link farm, directing users to numerous other PDFs hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive lure, leading to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=glados+voice+generator
    • http://files.salpiconontario.com/uploads/1/3/2/7/132740670/6866887.pdf
    • http://files.padmacandra.com/uploads/1/3/1/6/131606175/67cb0ae22.pdf
    • http://files.ewoptx.org/uploads/1/3/2/8/132814241/5969060.pdf
    • http://files.sentientcatalyst.com/uploads/1/3/2/6/132695663/86a487.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/31146090307.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/bumajufatesatikabeta.pdf
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/sasewolukexozexogefevimem.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/vixusubevin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4677/2646/files/texivabuvanakev.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/loxurapuvakerozesat.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/43250592512.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/noxep.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/jijimuberurotexad.pdf
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/32402381650.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/xixaruziwopef.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5580/files/96770448824.pdf
    • https://cdn.shopify.com/s/files/1/0430/3690/1527/files/mezaguribolotutaxeduvu.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013a54.bin
b65f7196723278be2af86269c00fc7615f5d74e4aa875f518ab367009cff38af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A54 5200 bytes
font_01_sfnt_off00014c19.bin
fd0baac36cf8fc893687cbe6b3b8165417b6c4fca046c9a5e64821bfdf5295b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C19 2140 bytes
font_02_sfnt_off00015589.bin
49a7b6a6022ad0750f3ce9b713f85c7cd2f2c955e32e46ddff28ce33b45939fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15589 3740 bytes
font_03_sfnt_off00016101.bin
46877e816302aaff455ec41ed7e50cb1b113ae71eb952761cca335ffe0f9e764		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16101 29792 bytes
font_04_sfnt_off0001a101.bin
6bde2e706da75e97b1813d7c71aa655e83ab8c0457294839454005d97acf0d17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A101 13636 bytes

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