Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c53f2ee927f504…

MALICIOUS

PDF

41.2 KB Created: 2020-03-13 07:49:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 83a7f7fee461f21fd7994bca418c4588 SHA-1: 36bd0fd99638cbf5737c33e2f4242e800a5c6e92 SHA-256: f9c53f2ee927f504080459b20034c18955747f672fac90eaef696a87c088a496
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. The primary URL points to a document about alkaline phosphatase elevation in dogs, but the majority of the links lead to other PDF files hosted on various domains. This suggests a link farm or a distribution mechanism for further malicious content, rather than a legitimate document. No scripts were extracted from this sample.

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://hostmaster.newskinandcare.com/uploads/1/3/1/1/131164039/131164039.html#causes+of+alkaline+phosphatase+elevation+in+dogs
    • http://bathmasterdesigns.net/uploads/1/3/0/9/130969904/206aab79a951e.pdf
    • http://dallasmusicalintruments.com/uploads/1/3/0/4/130475992/306ad0affa5419.pdf
    • http://algebra.mybooksucks.com/uploads/1/3/0/8/130874239/mudig.pdf
    • http://www.developplus.net/uploads/1/3/0/8/130874073/a304fb91.pdf
    • http://cadecim.com/uploads/1/3/0/5/130547340/xagixo-wutiz-bamilagu-musufazopoji.pdf
    • http://buckfinishes.com/uploads/1/3/0/3/130323158/roxerurunijunetegago.pdf
    • http://www.purelyinbound.com/uploads/1/3/0/3/130323167/fukumid.pdf
    • http://luxuryprimecar.com/uploads/1/3/0/6/130620788/fagesarewazu-volobokigesut-zamuwireze.pdf
    • http://www.hundredrivers.com/uploads/1/3/0/2/130272977/kologifiwusul-nosiduzabagolo-zedotatafa.pdf
    • http://mirandatinaphotography.com/uploads/1/3/0/6/130604446/nupadux.pdf
    • http://webdisk.townofhelvetia.com/uploads/1/3/0/5/130551567/papunedorukufi-bakasoxogejasu-dilaluluguzip-rigefe.pdf
    • http://noradavis.net/uploads/1/3/0/4/130477152/foxes.pdf
    • http://www.bizitransportsllc.com/uploads/1/3/0/4/130477176/wifavukorejibe.pdf
    • http://boxdropmattressoutlet.com/uploads/1/3/0/6/130639209/2948987.pdf
    • http://winesavvy.co.uk/uploads/1/3/0/4/130476208/a7ce724.pdf
    • http://capitalareaanesthia.com/uploads/1/3/0/6/130639076/jojofife.pdf
    • http://www.elysiancreations.com.au/uploads/1/3/0/5/130588779/5407521.pdf
    • http://ellaoliveyoga.com/uploads/1/3/0/4/130435784/sajojajodolurija.pdf
    • http://www.okcpotspot.com/uploads/1/3/0/5/130590157/8a3399c.pdf
    • http://oc3.co.uk/uploads/1/3/0/2/130272613/xesavomipux.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_off00007876.bin
20276eaa12bb2a73b3ef426eddc4b1f523e4d6c26b45a2dc3cce59e474104607		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7876 7936 bytes

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