Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9cfd623444582a7…

MALICIOUS

PDF

41.8 KB Created: 2020-05-15 17:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a52755790918a41fa39f7c1f0daee8bd SHA-1: 4e578ab43f9ca73cd7d031ca16740c4f9d07c1f9 SHA-256: e9cfd623444582a7db0f41e144bc39fda55594b4ec499918d3ccdbfc25fa2468
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text, though partially corrupted, contains a URL that appears to be a lure for movie content. This suggests a link farm or SEO poisoning technique to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://brandiefreeman.net/uploads/1/3/0/7/130740489/130740489.html#home+again+full+movie++mp4
    • http://nataliebatmitzvah.com/uploads/1/3/0/6/130639336/aa21959.pdf
    • http://thriftsinthesticks.com/uploads/1/3/1/4/131413550/janemaxud.pdf
    • http://achsp.com/uploads/1/3/0/7/130738789/dutowijekeripunux.pdf
    • http://plot-360.com/uploads/1/3/0/4/130435892/4347283.pdf
    • http://slibtec.nl/uploads/1/3/0/5/130551264/9534c465.pdf
    • http://utagohouse.com/uploads/1/3/0/8/130813032/miwadajagizax.pdf
    • http://90davida.com/uploads/1/3/0/5/130540683/rorekuxo.pdf
    • http://angelaeischens.com/uploads/1/3/0/5/130543369/pakosofamoweju-fupolasigomoso.pdf
    • http://iticsolutions.com/uploads/1/3/1/8/131860553/16db8daba84de.pdf
    • http://fuelandmove.com/uploads/1/3/1/8/131856225/152092693088.pdf
    • http://paddydemsey-art.com/uploads/1/3/0/6/130621214/367059.pdf
    • http://roetsbrothersdrywall.net/uploads/1/3/0/4/130436140/e82803b098f.pdf
    • http://islandadventureonline.com/uploads/1/3/1/4/131438874/zekeferewokadajur.pdf
    • http://educatoryx.com/uploads/1/3/0/8/130813330/rizeduwewezawaro.pdf
    • http://katanasushifh.com/uploads/1/3/0/7/130739188/jakavagetin.pdf
    • http://bism9.com/uploads/1/3/1/6/131606009/917975.pdf
    • http://dommebentley.com/uploads/1/3/0/3/130323163/4062237.pdf
    • http://inspiringchangeguru.com/uploads/1/3/1/4/131408864/favilitomedagusiw.pdf
    • http://southernoaksrestorationco.com/uploads/1/3/0/8/130813906/dc58dfeb465a.pdf
    • http://kiranalangjaya.com/uploads/1/3/0/8/130814250/retikewe.pdf
    • http://priscillaariana.com/uploads/1/3/1/4/131437283/a2af8c5b484.pdf
    • http://nolaninvestigations.com/uploads/1/3/1/0/131070695/kopopumizofi-rifesezeje-wizuvojuv.pdf
    • http://lincolnsrest.com/uploads/1/3/1/3/131383583/5945adfa.pdf
    • http://smcconsulting.fr/uploads/1/3/1/4/131409926/voxij-memoma.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_off0000765c.bin
1785889161ccbace47e3b23d2fee47e73cb39721ebfca37f9f7783db5533e183		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765C 10932 bytes

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