Malicious PDF — malware analysis report

Static analysis result for SHA-256 5596e284942db89a…

MALICIOUS

PDF

39.6 KB Created: 2020-03-06 15:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b00e194ce56fbfdcf00e683bb07ce962 SHA-1: afff60ebded34f08070051a9bd65856fe5922acb SHA-256: 5596e284942db89a2bc0d3204b81a7dee60eb9b0d1ee7e70ff14d2e67601cb66
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are numerically or generically named PDFs, suggesting a link farm designed to lure users to malicious content. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to URLs that are likely part of this link farm, aiming to direct users to potentially malicious sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://74-123-78-3.mgwnet.com/uploads/1/3/0/3/130313272/130313272.html#understanding+social+welfare+a+search+for+social+justice+pdf
    • http://alamopsychiatry.com/uploads/1/3/0/9/130969762/3710839.pdf
    • http://matchaspa.net/uploads/1/3/0/2/130288426/a0e1a770a4695.pdf
    • http://stepnup.net/uploads/1/3/0/6/130621794/bukezalov.pdf
    • http://www.caitlinblack.org.uk/uploads/1/3/0/2/130287936/39e73e1a678b.pdf
    • http://babiesdontcry.space/uploads/1/3/0/3/130379232/kufodawukisotok.pdf
    • http://7-niebo.com/uploads/1/3/0/5/130590521/c895d28ca9.pdf
    • http://transcreationlab.com/uploads/1/3/0/4/130475936/zuluxamanimub_dulunupowadu.pdf
    • http://simply-sarah.co.uk/uploads/1/3/0/4/130435930/fujuvusupibexix.pdf
    • http://paint-theatre.com/uploads/1/3/0/6/130621867/06856443.pdf
    • http://admin.rosannadiggs.com/uploads/1/3/0/5/130588927/kapapokataj_wojef_nimekuxudokij.pdf
    • http://app-requests.com/uploads/1/3/0/6/130620845/2691362.pdf
    • http://mobile-al-implants.com/uploads/1/3/0/2/130272548/3487216b2e4328.pdf
    • http://activlang.com/uploads/1/3/0/5/130589413/fapisanujixa_mogideru.pdf
    • http://buildbelievers.net/uploads/1/3/0/6/130604024/aa3ea37.pdf
    • http://mail.myjcmoblog.com/uploads/1/3/0/5/130588620/rigoje.pdf
    • http://mail16.sheng.studio/uploads/1/3/0/8/130814014/jezikirodobajak-gugogalowazuwis.pdf
    • http://fbom.org/uploads/1/3/0/2/130270811/waginiguboxo-zilevex-biduxoji.pdf
    • http://server.signatureofstuart.com/uploads/1/3/0/2/130272364/nobemes.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/6/130620937/bolototedujur.pdf
    • http://www.dejadefumar.es/uploads/1/3/0/8/130813648/269c82a.pdf
    • http://www.1inamillionbeautylab.com/uploads/1/3/0/5/130551144/7247755.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_off000071a6.bin
1eba5cbde403020bb59cd4a6f06a3dde81a6d1f6bf1825c50bd0f2e7728c9d3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A6 7844 bytes

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