Malicious PDF — malware analysis report

Static analysis result for SHA-256 5408db77d5caf1ec…

MALICIOUS

PDF

37.8 KB Created: 2020-05-11 01:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8b4857efde2dbc11df67850b45a8b5e2 SHA-1: 5c30ce57bf2b169039c95fab0f4a38143233b07f SHA-256: 5408db77d5caf1ec3bb5d92431df271d95b756231855b9e02369e4b1e0fee891
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. This pattern is indicative of a link farm designed to manipulate search engine results for potentially unwanted software, such as the 'Aptoide geometry dash 2.1 apk gratis' mentioned in the document body. The primary technique observed is the use of a link farm to distribute links to various PDF files, likely for SEO manipulation.

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://mmhac.com/uploads/1/3/0/3/130379589/130379589.html#aptoide+geometry+dash+2.+1+apk+gratis
    • http://funlearningvillage.com/uploads/1/3/1/8/131871781/8336152.pdf
    • http://carrollstransport.net/uploads/1/3/0/7/130740490/102037.pdf
    • http://dgh.nyc/uploads/1/3/1/4/131406444/vujoxizoforoso.pdf
    • http://newerictex.com/uploads/1/3/0/3/130379169/4872862.pdf
    • http://mysunfast3200.com/uploads/1/3/0/2/130288722/figokokibebutodiduza.pdf
    • http://bandmwoodcraft.com/uploads/1/3/0/6/130640029/bijegatewogomex.pdf
    • http://sharetact.com/uploads/1/3/0/5/130588251/8930067.pdf
    • http://lagrangebiscuitcompany.com/uploads/1/3/0/3/130323251/tiporaje.pdf
    • http://ussyorktowncv10workcrew.com/uploads/1/3/0/6/130620730/530750.pdf
    • http://greenearthmusic.org/uploads/1/3/0/6/130639304/kogafuno.pdf
    • http://beausauley.com/uploads/1/3/0/6/130620590/tipepagamu.pdf
    • http://goyxrd.com/uploads/1/3/0/2/130272284/f35e2609da94e.pdf
    • http://summerlolitamyers.com/uploads/1/3/0/7/130738777/8106315.pdf
    • http://diybellycast.com/uploads/1/3/1/4/131438761/b799a7a98b340.pdf
    • http://bouncetothebeach.com/uploads/1/3/0/7/130738569/somevuditadatat_zokos.pdf
    • http://terrymerschat.com/uploads/1/3/0/4/130435577/nokekamu-terolipoxab.pdf
    • http://easyupstair.com/uploads/1/3/0/6/130604039/duvopesibamipuvo.pdf
    • http://directordean.org/uploads/1/3/1/6/131637308/1dd9bcc77.pdf
    • http://alrt.store/uploads/1/3/0/7/130738850/xibotokiwobox-levuzejopejozi-vinubun.pdf
    • http://rrtable.com/uploads/1/3/0/8/130814466/nexuganid-jajalo-wanaguka.pdf
    • http://smizzysphizzies.com/uploads/1/3/1/0/131071180/4199912.pdf
    • http://animemangadrawingclass.com/uploads/1/3/0/3/130313046/1322746.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off00006380.bin
4d78873ef3976a37ebe767d4b39cebf10c1216c4bf0547960202ad1ab5d20b79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6380 12092 bytes

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