Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b6ebfbd9958e28…

MALICIOUS

PDF

57.9 KB Created: 2020-03-09 07:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d8f8a5dcfe366ee6425f30ac7bd7bede SHA-1: 4a6f859f5883a4f63c9cf52a195a86174fdfaaf7 SHA-256: c7b6ebfbd9958e282617222ad6582e0de0160902a7afb9d42866511ad2d753e7
90 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 with numeric slugs, indicative of a link farm or SEO spam tactic. The document body suggests a lure for downloading a PDF related to "Gst 101 use of english and communication skills". The presence of urgency and callback lures further supports a phishing or scam objective. No scripts were extracted, limiting the analysis of direct payload delivery.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://haiyi-carriageinnsf.devsite-1.com/uploads/1/3/0/2/130288811/130288811.html#gst+101+use+of+english+and+communication+skills+pdf+download
    • http://mail.matthewcampbelljewelry.com/uploads/1/3/0/7/130776808/xatuwa-gabebimuwo-tamevufobatova.pdf
    • http://youngjoopark.net/uploads/1/3/0/4/130476045/078e2de2.pdf
    • http://donerboyz.com/uploads/1/3/0/9/130969229/busedemizukilajeg.pdf
    • http://marketingshingle.net/uploads/1/3/0/4/130436121/0d73973025.pdf
    • http://pirtekkzn.com/uploads/1/3/0/4/130489230/6651535.pdf
    • http://galileobrazil.com/uploads/1/3/0/9/130969343/db7df0ab1bb0d0.pdf
    • http://homecomfortltd.com/uploads/1/3/0/3/130323285/rubopi-wusoturisar-vumuno.pdf
    • http://supercoolertechnologies.com/uploads/1/3/0/4/130483413/4769222.pdf
    • http://robinshome.org/uploads/1/3/0/9/130969432/6277d7940cba8a.pdf
    • http://thefrc.us/uploads/1/3/0/7/130775221/nizulalalonenegoneji.pdf
    • http://next-stepmentoring.com/uploads/1/3/0/7/130775462/gosumulegolagop.pdf
    • http://bcollectiveboutique.com/uploads/1/3/0/3/130313755/tekerojifelewito.pdf
    • http://phillipskruse.com/uploads/1/3/0/6/130639521/2934801.pdf
    • http://74-123-76-126.mgwnet.com/uploads/1/3/0/6/130639811/ae706dff26875f.pdf
    • http://markinthemiddle.org/uploads/1/3/0/4/130489023/1445326.pdf
    • http://blairkhartman.com/uploads/1/3/0/7/130775130/joriwigobivawu_wokolepiv_karemef.pdf
    • http://worldcultureguide.org/uploads/1/3/0/2/130272071/ragesowipujotu_vibezenel_palusuvikumag_gepatuvuf.pdf
    • http://seattle2025.org/uploads/1/3/0/4/130479472/ad4d2.pdf
    • http://m.transformationlifecoaching.net/uploads/1/3/0/6/130604458/lafilisemejilef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009564.bin
c4b4c140dc873fc3acd2d7eed2cd7a65ff652af1af984448cefb5f8b366004f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9564 9076 bytes
font_01_sfnt_off0000b7cf.bin
83212b3f6d1a8b966adce1b1a79854c8ee8cb7cace02cb1607409375bc7ca279		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7CF 3132 bytes
font_02_sfnt_off0000c2c1.bin
46167556d27ce966593fb59d65f07bb05e314bf4f7fb947798e70db09fde1779		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C1 16260 bytes

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