Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd9dfa9e625497c9…

MALICIOUS

PDF

39.2 KB Created: 2020-04-01 20:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 92ae7da7e5686d9786b9d55932272f68 SHA-1: ae41100d808b42d758835cf05aedb82d2f74184b SHA-256: cd9dfa9e625497c96c09380c1cd9cc07bdbc475733b7619a27b7df7b76185759
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named PDFs hosted on various domains. The document body itself is corrupted but contains a reference to 'how to open airdrop on iphone 4s', suggesting a lure to trick users into visiting these external sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to host malicious content on numerous domains.

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://bshppopup.com/uploads/1/3/0/8/130874679/130874679.html#how+to+open+airdrop+on+iphone+4s
    • http://sittingwarrior.com/uploads/1/3/0/5/130589371/a7e1277555.pdf
    • http://mjaxlegal.com/uploads/1/3/0/4/130488282/jodemureregekiba.pdf
    • http://femmefatalegallery.com/uploads/1/3/0/5/130588230/nokama-bipekuguve.pdf
    • http://noniecabrera.com/uploads/1/3/0/5/130588675/joxezera_tudifusedenose_sugunupedoza_jajavu.pdf
    • http://blackwomensyogaretreats.com/uploads/1/3/0/6/130604528/2833100.pdf
    • http://reservestudydiy.org/uploads/1/3/0/5/130588588/25f18c85f459ecc.pdf
    • http://jmartinbuildingltd.com/uploads/1/3/1/3/131398488/kogozapalimaxotef.pdf
    • http://mymvmtpods.com/uploads/1/3/0/9/130969260/jewomujimurutowe.pdf
    • http://esilkroadgoods.com/uploads/1/3/0/7/130739478/lofapiruwum.pdf
    • http://triadmarketplacenc.com/uploads/1/3/1/4/131453465/4232976.pdf
    • http://minoux.net/uploads/1/3/0/7/130775162/2531685.pdf
    • http://tamicoritreasures.com/uploads/1/3/0/9/130969265/e712ec1cb74bf.pdf
    • http://korplatkungen.com/uploads/1/3/0/4/130489051/sonapokoju.pdf
    • http://cementedintimephotography.ca/uploads/1/3/0/6/130621043/jixuxokewefizig_rutatemudutom.pdf
    • http://regenerativelearning.org/uploads/1/3/0/6/130639719/xinesesujunovepeze.pdf
    • http://whitesbakerycafe.com/uploads/1/3/0/2/130289595/4594757.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_off00007272.bin
f273af9c371e26e30589713298f182c06a3890ca5c1075b9cdc10fa3c43ae2c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7272 7404 bytes

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