Malicious PDF — malware analysis report

Static analysis result for SHA-256 11e88189f8476880…

MALICIOUS

PDF

43.8 KB Created: 2020-03-10 06:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7db63f6020e3a4b75cb68dd9e2e9f27b SHA-1: f575b0248607c05af19f112e79513bc7478de398 SHA-256: 11e88189f8476880ea9a0da21402be9000bc1ed1178463570df03c3035567eee
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many of which point to other PDF files. The primary URL, http://74-123-73-159.mgwnet.com/uploads/1/3/0/7/130740440/130740440.html#ergonomics+pdf+download, appears to be a lure to encourage users to click on these links. The ML classifier strongly indicated maliciousness, and the structure suggests a link farm designed to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://74-123-73-159.mgwnet.com/uploads/1/3/0/7/130740440/130740440.html#ergonomics+pdf+download
    • http://compulsiverambler.com/uploads/1/3/0/7/130775383/sazoxime.pdf
    • http://www.psychobunnydc.com/uploads/1/3/0/9/130969942/8556352.pdf
    • http://musmuin.com/uploads/1/3/0/5/130544625/foravufafe.pdf
    • http://www.taoofgrow.com/uploads/1/3/0/8/130813612/70c8bc06.pdf
    • http://seattlegirlslacrosse.com/uploads/1/3/0/7/130775868/bomexix.pdf
    • http://www.mekassociatesllc.com/uploads/1/3/0/2/130272083/7f4dc371.pdf
    • http://jennajeslis.com/uploads/1/3/0/7/130738707/6813423.pdf
    • http://rachelsaitzyk.com/uploads/1/3/0/7/130739919/desegubolaz_nebivelaritabez_kojamadas_nixelupawudu.pdf
    • http://freedomjourneyfitness.com/uploads/1/3/0/7/130775440/kumix.pdf
    • http://newkindlife.com/uploads/1/3/0/5/130590456/siwozifuvasilo_wujena_fazitazezepewo_xaxumixefexitas.pdf
    • http://followmagpi.com/uploads/1/3/0/6/130639779/lizuwunumamarovawaj.pdf
    • http://narvaezabogados.com/uploads/1/3/0/5/130590043/reran-jewikabebirofu-gonuxegi-wogamugaxuro.pdf
    • http://garagedoorcredit.com/uploads/1/3/0/5/130551402/fexugifal.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_off00007970.bin
4ddd467c157ae34a35fa2db9bfd484988cd007c32aaed35c5fdd0890c9d68f54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7970 8308 bytes
font_01_sfnt_off0000999c.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x999C 1708 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.