Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd8108731af5b4c…

MALICIOUS

PDF

38.7 KB Created: 2020-03-20 10:54:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8bb381ed9e8b38e5b859d3b9278badd4 SHA-1: b4ecf680cb1df091d28acf5ce0dc6da6a12ce2e2 SHA-256: 1fd8108731af5b4ce3b1be891ef878240ce992dc0c565842fdb3e52b565030b7
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files on various domains, indicating a link farm or SEO spam campaign. The document body, though partially corrupted, contains a reference to a book review and the wkhtmltopdf generator, suggesting a deceptive lure. The primary intent appears to be directing users to a network of potentially malicious or spam-related 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://iavnt.com/uploads/1/3/0/5/130590738/130590738.html#bag+of+bones+stephen+king+book+review
    • http://misssupremepurityqueen.com/uploads/1/3/0/7/130739503/dutifewini_toxip.pdf
    • http://webmail.peeldistrictslac.com/uploads/1/3/0/6/130621046/lewiwige_sibexufajufo_vizafabikenud.pdf
    • http://bailbondsbuffalo.com/uploads/1/3/0/8/130874016/xonugiseru_sukuxijufulele_wowujuzoti_sepet.pdf
    • http://peaceinside.org/uploads/1/3/0/7/130739377/9896475.pdf
    • http://resinexchange.com/uploads/1/3/0/4/130483577/likulagijurukur.pdf
    • http://thegvegascafe.com/uploads/1/3/0/4/130435955/b4ca1a68436fb0.pdf
    • http://mysospride.ca/uploads/1/3/0/2/130289443/zulamalik_bozepagubuwaji_tokaximeduvem_bogagawas.pdf
    • http://candlesmedia.com/uploads/1/3/0/4/130475959/484d0e6a4d40ce.pdf
    • http://bolderlegal.com/uploads/1/3/0/2/130291475/a895aee.pdf
    • http://byhisstripesiamhealed.com/uploads/1/3/0/6/130604394/butila-rurukaf-bojawure-resuji.pdf
    • http://pvbcommunications.com/uploads/1/3/0/6/130604765/wizofemebus.pdf
    • http://www.northernservicesolutions.com/uploads/1/3/1/1/131164079/9323920.pdf
    • http://karengoedeke.com/uploads/1/3/0/2/130291649/9018820.pdf
    • http://www.bmx-bundesliga.de/uploads/1/3/1/0/131071047/musobunojonadezakepe.pdf
    • http://webmail.buynaklaw.com/uploads/1/3/0/3/130313379/53564217d410.pdf
    • http://www.concordia-archives.net/uploads/1/3/0/2/130274017/8963d9badd.pdf
    • http://mspaigeclass.com/uploads/1/3/0/4/130489152/nazokifipowik.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_off0000724c.bin
e87dfdddba6be43ae544e3613e16fa5514f0e7ab6dc9ef209ea24963542814fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 6864 bytes

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