Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b661e842e068557…

MALICIOUS

PDF

45.8 KB Created: 2020-03-24 21:16:52 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aaad98b80336c92a7701345f4a9e78f1 SHA-1: 9e359601dff759b855025d8d227a458caea987ff SHA-256: 3b661e842e068557eed83f197c044d02076e5a9c795d07e1bcfb19e13b3e3767
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files on various domains. This behavior is indicative of a link farm or a mechanism to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links suggests a phishing or malware distribution attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://smbrandmgt.com/uploads/1/3/0/4/130491418/130491418.html#the+zohar+pritzker+edition+vol.+1
    • http://propagandaculture.com/uploads/1/3/0/5/130590481/xojax.pdf
    • http://tanglewood-ranch.com/uploads/1/3/0/2/130272918/wenomaviti.pdf
    • http://myelitetutors.com/uploads/1/3/1/1/131163723/7e48a1cca5f4e.pdf
    • http://www.lakeoswegobass.com/uploads/1/3/1/0/131070255/5525889c930.pdf
    • http://sacmuseumofmovement.net/uploads/1/3/0/8/130874039/5a1713d5af.pdf
    • http://condosinmanila.com/uploads/1/3/0/6/130604324/7246415.pdf
    • http://binarysv.com/uploads/1/3/0/3/130379612/kifitadube_tawipusuwefiwuw_jowonukowawota.pdf
    • http://roseland-retreat.com/uploads/1/3/0/4/130435641/sawiragifupepenevu.pdf
    • http://allerdad.com/uploads/1/3/0/5/130588663/zorimok.pdf
    • http://korish245.ru/uploads/1/3/0/6/130604112/1960204.pdf
    • http://www.kateluvsbeauty.com/uploads/1/3/0/5/130589004/ac56060811df560.pdf
    • http://scandinavian-relocationgroup.com/uploads/1/3/0/3/130323642/995706.pdf
    • http://forhimministry.org/uploads/1/3/0/4/130489367/4956927.pdf
    • http://tripvector.org/uploads/1/3/0/5/130588922/viguxukor.pdf
    • http://supyalleverybody.com/uploads/1/3/0/2/130287895/4317147.pdf
    • http://kiteandbuckle.com/uploads/1/3/0/4/130476309/rezafalun.pdf
    • http://rebeccalmontgomery.com/uploads/1/3/0/6/130621965/resan-gavekefojiparag-jaxubotovakape-bepalovovatareb.pdf
    • http://runnersofthenish.com/uploads/1/3/0/8/130874395/lesuxuv.pdf
    • http://ninktat.com/uploads/1/3/0/3/130323532/xufozoboludajexa.pdf
    • http://www.garethaustin.com/uploads/1/3/0/7/130739776/pabarelivejo.pdf
    • http://www.calicoboutiquecreams.com/uploads/1/3/1/0/131070379/vurobadoborere.pdf
    • http://rockhilltowncenter.com/uploads/1/3/0/2/130272458/e08b6.pdf
    • http://cattitudesweden.se/uploads/1/3/0/3/130323767/7901744.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008160.bin
92e3a7c9960c47a50467bfcf743e262c93a07effe5dbe03657e320380eefd9b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8160 7964 bytes
font_01_sfnt_off0000a02e.bin
87fd6b1a35a64f5c2d30902eea89631a9c05d6b36ef70c6d0cee4d2ad867525e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA02E 2596 bytes

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