Malicious PDF — malware analysis report

Static analysis result for SHA-256 adcb4730aa720477…

MALICIOUS

PDF

44.9 KB Created: 2020-03-27 13:22:37 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 99fb280e47948ca4d00ace82999d64d3 SHA-1: cdbe67f4922cd98800722fad7ff2f4f59ab2ec22 SHA-256: adcb4730aa720477a4bb48437ffbfc7ed9676bb039a77890c791ea1c0822cd61
70 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many pointing to PDF files on various domains, indicative of a link farm. One embedded URL, 'http://burleypta.org/uploads/1/3/1/3/131381109/131381109.html#war+thunder+how+to+create+custom+skins', is present in the document body. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic firing suggests a lure to trick users into clicking these links. The overall structure points to a malicious PDF designed for redirection or phishing.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://burleypta.org/uploads/1/3/1/3/131381109/131381109.html#war+thunder+how+to+create+custom+skins
    • http://rosholtcorp.com/uploads/1/3/0/7/130739046/8514266.pdf
    • http://mta-sts.mybooksucks.com/uploads/1/3/0/7/130775515/muzixisapozob.pdf
    • http://aekus.ca/uploads/1/3/0/2/130291438/2657086.pdf
    • http://frnk.co/uploads/1/3/0/6/130620382/2914908.pdf
    • http://negativetopositivefilms.com/uploads/1/3/0/7/130740371/6945d89735a788.pdf
    • http://zionelite.com/uploads/1/3/0/4/130488091/deca1.pdf
    • http://www.my-thm-story.blog/uploads/1/3/0/8/130874520/5b2168c.pdf
    • http://ninjaproxies.info/uploads/1/3/0/7/130740324/d682f9d750.pdf
    • http://jjsmexicanfood.net/uploads/1/3/0/4/130476062/tenavokabex-suvemamat.pdf
    • http://thekandyfestival.com/uploads/1/3/0/5/130589386/zajoneki_sepizabefu_muxufupojo.pdf
    • http://metrolinasprinkler.com/uploads/1/3/0/9/130969027/paximezesozuxem-dufilixazeret-bezazuzirura-nelikiwop.pdf
    • http://ohiolaserspa.com/uploads/1/3/0/4/130488583/subekafofobufasugad.pdf
    • http://motherwrenstudio.com/uploads/1/3/0/7/130739916/kelikejokimex.pdf
    • http://mkwritingsolutions.co.uk/uploads/1/3/0/5/130542870/e5017a0ee39ea2.pdf
    • http://wigglingpaws.com/uploads/1/3/0/7/130776021/763ea74d2876ad.pdf
    • http://shortpowfilm.com/uploads/1/3/0/4/130483285/d40ed.pdf
    • http://sittingtreefarm.com/uploads/1/3/0/5/130538956/452fa6e96.pdf
    • http://ladderstop.net/uploads/1/3/0/2/130273980/d969cde5dc232.pdf
    • http://angletonartsacademy.com/uploads/1/3/0/2/130274091/vijatera.pdf
    • http://trapbabyla.com/uploads/1/3/0/4/130483499/xowanasofetetujul.pdf
    • http://sta-66-99-58-221.ladse.org/uploads/1/3/0/5/130545573/lajelikop-fejerum-seligetujeves.pdf
    • http://montrell.net/uploads/1/3/0/4/130435500/8afea23.pdf
    • http://cpanel.jlrodgers.com/uploads/1/3/0/9/130969072/939169.pdf
    • http://floatinthesky.com/uploads/1/3/0/8/130814011/wijesi_sofuwikufoga_gemugasonufese.pdf
    • http://animatedcellexplorer.org/uploads/1/3/0/6/130621282/xawetak-tutemapewume.pdf
    • http://floatinthesky.com/uploads/1/3/0/8/130814011/wijesi_sof
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cc7.bin
c314dae2152ea9cdaf49009bc33919e7d9909ad8078f297156b4b17a02e55b8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC7 8048 bytes
font_01_sfnt_off00009bc3.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC3 2652 bytes

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