Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0cbc5e5da7d473…

MALICIOUS

PDF

43.0 KB Created: 2020-06-14 11:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53dd1fd7f91ed5629f3bbcc32bc3a2ac SHA-1: aff94d5664d37e791159b2b7ffc97cedbcf263c6 SHA-256: 4d0cbc5e5da7d473537b8da2bfcf0553ad1a21f26cf4ce677af345bd42b19039
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which are structured to appear as SEO-optimized content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'kalezees.com' being a dominant host. The embedded document body also contains URLs, including 'http://thornburgsearch.com/uploads/1/3/0/2/130272631/130272631.html#dmc+lx7+manual'. This suggests a campaign to drive traffic to potentially malicious or deceptive websites.

Heuristics 3

  • 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
  • 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://thornburgsearch.com/uploads/1/3/0/2/130272631/130272631.html#dmc+lx7+manual
    • http://kalezees.com/uploads/1/3/0/7/130775628/fuworex.pdf
    • http://gmuwellbeing.com/uploads/1/3/0/5/130539888/vikufirazovibidubi.pdf
    • http://richardsnyderbrownu.com/uploads/1/3/0/3/130379147/1142490.pdf
    • http://intranet.fairlie.school.nz/uploads/1/3/0/5/130542934/f7ebead85045.pdf
    • http://fcroaddocs.us/uploads/1/3/0/7/130775222/5702173.pdf
    • http://isyforstockport.com/uploads/1/3/0/7/130740073/fufetut_jenuvubaxam.pdf
    • http://disabilityssilawyer.com/uploads/1/3/0/4/130483617/vafanamogupaduxitut.pdf
    • http://orcasmt.com/uploads/1/3/0/4/130489262/5b998a.pdf
    • http://cpanel.fit212maine.com/uploads/1/3/2/3/132302888/1673449.pdf
    • http://dtpvt.com/uploads/1/3/1/0/131070571/vogazuneka-pebavisuziruxid.pdf
    • http://evokedanceeistedfodd.com/uploads/1/3/1/6/131637814/tulijuvofituginafer.pdf
    • http://cpanel.oregontruffleoil.com/uploads/1/3/1/1/131164095/5154cca.pdf
    • http://74-123-73-221.mgwnet.com/uploads/1/3/1/6/131636833/vuromifob_nigajomoxune_gifubasufu_xuwenufulorekil.pdf
    • https://woxonoxemu.files.wordpress.com/2020/06/34123565226.pdf
    • https://lilozewu.files.wordpress.com/2020/06/68438287012.pdf
    • https://nirumepuna.files.wordpress.com/2020/06/25404175564.pdf
    • https://lufulekosaro.files.wordpress.com/2020/06/64543637118.pdf
    • https://fejikix.files.wordpress.com/2020/06/89089520345.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b82.bin
c46bfbef46956f44c362f8cb31ac5d59ee61ea2964169572169c353dbcfb7e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B82 11276 bytes

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